diff --git a/cmd/integration_tests/eventloop/eventloop_test.go b/cmd/integration_tests/eventloop/eventloop_test.go index 06b492418f4..eb9004b04ca 100644 --- a/cmd/integration_tests/eventloop/eventloop_test.go +++ b/cmd/integration_tests/eventloop/eventloop_test.go @@ -213,7 +213,7 @@ export default function() { } require.Equal(t, []string{ "setTimeout 1 was stopped because the VU iteration was interrupted", - "just error\n\tat /script.js:13:4(15)\n\tat native\n", "1", + "just error\n\tat default (/script.js:13:5(14))\n\tat native\n", "1", }, msgs) }) } diff --git a/core/engine_test.go b/core/engine_test.go index d963d29e0f4..7f25c847f9f 100644 --- a/core/engine_test.go +++ b/core/engine_test.go @@ -886,8 +886,8 @@ func TestSetupException(t *testing.T) { require.Error(t, err) var exception errext.Exception require.ErrorAs(t, err, &exception) - require.Equal(t, "Error: baz\n\tat baz (file:///bar.js:6:16(3))\n"+ - "\tat file:///bar.js:3:8(3)\n\tat setup (file:///script.js:4:2(4))\n\tat native\n", + require.Equal(t, "Error: baz\n\tat baz (file:///bar.js:6:17(3))\n"+ + "\tat default (file:///bar.js:3:12(3))\n\tat setup (file:///script.js:4:6(3))\n\tat native\n", err.Error()) } } @@ -934,7 +934,7 @@ func TestVuInitException(t *testing.T) { var exception errext.Exception require.ErrorAs(t, err, &exception) - assert.Equal(t, "Error: oops in 2\n\tat file:///script.js:10:9(29)\n\tat native\n", err.Error()) + assert.Equal(t, "Error: oops in 2\n\tat file:///script.js:10:10(21)\n", err.Error()) var errWithHint errext.HasHint require.ErrorAs(t, err, &errWithHint) diff --git a/go.mod b/go.mod index 7a76ef15ad2..643b8a8e896 100644 --- a/go.mod +++ b/go.mod @@ -62,3 +62,5 @@ require ( golang.org/x/text v0.3.7 // indirect google.golang.org/genproto v0.0.0-20210604141403-392c879c8b08 // indirect ) + +replace github.com/dop251/goja => github.com/mstoykov/goja v0.0.0-20221110141717-df602e6aca88 diff --git a/go.sum b/go.sum index 867a0ee8385..6ea1fb1133a 100644 --- a/go.sum +++ b/go.sum @@ -40,12 +40,6 @@ github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cu github.com/dlclark/regexp2 v1.4.1-0.20201116162257-a2a8dda75c91/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc= github.com/dlclark/regexp2 v1.7.0 h1:7lJfhqlPssTb1WQx4yvTHN0uElPEv52sbaECrAQxjAo= github.com/dlclark/regexp2 v1.7.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8= -github.com/dop251/goja v0.0.0-20211022113120-dc8c55024d06/go.mod h1:R9ET47fwRVRPZnOGvHxxhuZcbrMCuiqOz3Rlrh4KSnk= -github.com/dop251/goja v0.0.0-20220405120441-9037c2b61cbf/go.mod h1:R9ET47fwRVRPZnOGvHxxhuZcbrMCuiqOz3Rlrh4KSnk= -github.com/dop251/goja v0.0.0-20221003171542-5ea1285e6c91/go.mod h1:yRkwfj0CBpOGre+TwBsqPV0IH0Pk73e4PXJOeNDboGs= -github.com/dop251/goja v0.0.0-20221106173738-3b8a68ca89b4 h1:arM6Tq1Ba+a9FWuq3S6Qgrfd5MD0slQdMnCKI2VclFg= -github.com/dop251/goja v0.0.0-20221106173738-3b8a68ca89b4/go.mod h1:yRkwfj0CBpOGre+TwBsqPV0IH0Pk73e4PXJOeNDboGs= -github.com/dop251/goja_nodejs v0.0.0-20210225215109-d91c329300e7/go.mod h1:hn7BA7c8pLvoGndExHudxTDKZ84Pyvv+90pbBjbTz0Y= github.com/dop251/goja_nodejs v0.0.0-20211022123610-8dd9abb0616d/go.mod h1:DngW8aVqWbuLRMHItjPUyqdj+HWPvnQe8V8y1nDpIbM= github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= @@ -122,7 +116,6 @@ github.com/klauspost/compress v1.15.1/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47e github.com/klauspost/compress v1.15.11 h1:Lcadnb3RKGin4FYM/orgq0qde+nc15E5Cbqg4B9Sx9c= github.com/klauspost/compress v1.15.11/go.mod h1:QPwzmACJjUTFsnSHH934V6woptycfrDDJnH7hvFVbGM= github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= -github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI= github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0= github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk= github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= @@ -145,6 +138,8 @@ github.com/mstoykov/atlas v0.0.0-20220808085829-90340e9998bd h1:x/wQ8/umYu2x0icx github.com/mstoykov/atlas v0.0.0-20220808085829-90340e9998bd/go.mod h1:9vRHVuLCjoFfE3GT06X0spdOAO+Zzo4AMjdIwUHBvAk= github.com/mstoykov/envconfig v1.4.1-0.20220114105314-765c6d8c76f1 h1:94EkGmhXrVUEal+uLwFUf4fMXPhZpM5tYxuIsxrCCbI= github.com/mstoykov/envconfig v1.4.1-0.20220114105314-765c6d8c76f1/go.mod h1:vk/d9jpexY2Z9Bb0uB4Ndesss1Sr0Z9ZiGUrg5o9VGk= +github.com/mstoykov/goja v0.0.0-20221110141717-df602e6aca88 h1:9vhbdSLbCm8ydfrT3NJZjWhmlzUjl8tE+MXFkF+90G4= +github.com/mstoykov/goja v0.0.0-20221110141717-df602e6aca88/go.mod h1:yRkwfj0CBpOGre+TwBsqPV0IH0Pk73e4PXJOeNDboGs= github.com/mstoykov/k6-taskqueue-lib v0.1.0 h1:M3eww1HSOLEN6rIkbNOJHhOVhlqnqkhYj7GTieiMBz4= github.com/mstoykov/k6-taskqueue-lib v0.1.0/go.mod h1:PXdINulapvmzF545Auw++SCD69942FeNvUztaa9dVe4= github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d h1:VhgPp6v9qf9Agr/56bj7Y/xa04UccTW04VP0Qed4vnQ= @@ -342,9 +337,8 @@ google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+Rur google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo= gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= -gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= -gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= gopkg.in/guregu/null.v3 v3.3.0 h1:8j3ggqq+NgKt/O7mbFVUFKUMWN+l1AmT5jQmJ6nPh2c= diff --git a/js/bundle.go b/js/bundle.go index 0088c85b070..ff95fbdfe9f 100644 --- a/js/bundle.go +++ b/js/bundle.go @@ -8,6 +8,7 @@ import ( "fmt" "net/url" "runtime" + "strings" "github.com/dop251/goja" "github.com/sirupsen/logrus" @@ -28,7 +29,7 @@ import ( type Bundle struct { Filename *url.URL Source string - Program *goja.Program + Module goja.CyclicModuleRecord Options lib.Options BaseInitContext *InitContext @@ -38,18 +39,114 @@ type Bundle struct { registry *metrics.Registry exports map[string]goja.Callable + + cache map[string]moduleCacheElement + reverse map[goja.ModuleRecord]*url.URL + compiler *compiler.Compiler } // A BundleInstance is a self-contained instance of a Bundle. type BundleInstance struct { - Runtime *goja.Runtime + Runtime *goja.Runtime + ModuleInstance goja.ModuleInstance // TODO: maybe just have a reference to the Bundle? or save and pass rtOpts? env map[string]string exports map[string]goja.Callable moduleVUImpl *moduleVUImpl - pgm programWithSource +} + +func (bi *BundleInstance) getExported(name string) goja.Value { + return bi.ModuleInstance.GetBindingValue(name) +} + +type moduleCacheElement struct { + err error + m goja.ModuleRecord +} + +// TODO use the first argument +func (b *Bundle) resolveModule(ref interface{}, specifier string) (goja.ModuleRecord, error) { + if specifier == "k6" || strings.HasPrefix(specifier, "k6/") { + k, ok := b.cache[specifier] + if ok { + return k.m, k.err + } + mod, ok := b.BaseInitContext.modules[specifier] + if !ok { + return nil, fmt.Errorf("unknown module: %s", specifier) + } + b.cache[specifier] = moduleCacheElement{m: wrapGoModule(mod)} + return b.cache[specifier].m, nil + } + // todo fix + var pwd *url.URL + var main bool + if ref == nil { + pwd = loader.Dir(b.Filename) + main = true + } else if mr, ok := ref.(goja.ModuleRecord); ok { + pwd = loader.Dir(b.reverse[mr]) + } // TODO fix this for all other cases using ref and cache + fileurl, err := loader.Resolve(pwd, specifier) + if err != nil { + return nil, err + } + originalspecifier := specifier //nolint:ifshort + specifier = fileurl.String() + if specifier == "file://-" { + fileurl = b.Filename + specifier = b.Filename.String() + } + k, ok := b.cache[specifier] + if ok { + return k.m, k.err + } + var data string + if originalspecifier == b.Filename.String() { + // this mostly exists for tests ... kind of + data = b.Source + } else { + var resolvedsrc *loader.SourceData + resolvedsrc, err = loader.Load(b.BaseInitContext.logger, b.BaseInitContext.filesystems, fileurl, originalspecifier) + if err != nil { + b.cache[specifier] = moduleCacheElement{err: err} + return nil, err + } + data = string(resolvedsrc.Data) + } + + ast, ismodule, err := b.compiler.Parse(data, specifier, false) + if err != nil { + b.cache[specifier] = moduleCacheElement{err: err} + return nil, err + } + if !ismodule { + /* TODO enable this and fix the message + b.BaseInitContext.logger.WithField("specifier", specifier).Error( + "A not module will be evaluated. This might not work great, please don't use commonjs") + //*/ + prg, _, err := b.compiler.Compile(data, specifier, false) + if err != nil { // TODO try something on top? + b.cache[specifier] = moduleCacheElement{err: err} + return nil, err + } + m := wrapCommonJS(prg, main) + b.reverse[m] = fileurl + b.cache[specifier] = moduleCacheElement{m: m} + return m, nil + // todo warning + // todo implement wrapper + } + m, err := goja.ModuleFromAST(ast, b.resolveModule) + b.reverse[m] = fileurl + if err != nil { + b.cache[specifier] = moduleCacheElement{err: err} + return nil, err + } + b.cache[specifier] = moduleCacheElement{m: m} + return m, nil } // NewBundle creates a new bundle from a source file and a filesystem. @@ -69,27 +166,38 @@ func NewBundle( Strict: true, SourceMapLoader: generateSourceMapLoader(piState.Logger, filesystems), } - pgm, _, err := c.Compile(code, src.URL.String(), false) - if err != nil { - return nil, err - } - // Make a bundle, instantiate it into a throwaway VM to populate caches. rt := goja.New() + // Make a bundle, instantiate it into a throwaway VM to populate caches. bundle := Bundle{ Filename: src.URL, Source: code, - Program: pgm, BaseInitContext: NewInitContext(piState.Logger, rt, c, compatMode, filesystems, loader.Dir(src.URL)), RuntimeOptions: piState.RuntimeOptions, CompatibilityMode: compatMode, exports: make(map[string]goja.Callable), registry: piState.Registry, + cache: make(map[string]moduleCacheElement), + reverse: make(map[goja.ModuleRecord]*url.URL), + compiler: c, } - if err = bundle.instantiate(piState.Logger, rt, bundle.BaseInitContext, 0); err != nil { + + m, err := bundle.resolveModule(nil, src.URL.String()) + if err != nil { return nil, err } + err = m.Link() + if err != nil { + return nil, err + } + // Make a bundle, instantiate it into a throwaway VM to populate caches. + bundle.Module = m.(goja.CyclicModuleRecord) - err = bundle.getExports(piState.Logger, rt, true) + var mi goja.ModuleInstance + if mi, err = bundle.instantiate(piState.Logger, rt, bundle.BaseInitContext, 0); err != nil { + return nil, err + } + + err = bundle.getExports(piState.Logger, mi, true) if err != nil { return nil, err } @@ -120,12 +228,8 @@ func NewBundleFromArchive(piState *lib.TestPreInitState, arc *lib.Archive) (*Bun CompatibilityMode: compatMode, SourceMapLoader: generateSourceMapLoader(piState.Logger, arc.Filesystems), } - pgm, _, err := c.Compile(string(arc.Data), arc.FilenameURL.String(), false) - if err != nil { - return nil, err - } rt := goja.New() - initctx := NewInitContext(piState.Logger, rt, c, compatMode, arc.Filesystems, arc.PwdURL) + i := NewInitContext(piState.Logger, rt, c, compatMode, arc.Filesystems, arc.PwdURL) env := arc.Env if env == nil { @@ -140,22 +244,34 @@ func NewBundleFromArchive(piState *lib.TestPreInitState, arc *lib.Archive) (*Bun bundle := &Bundle{ Filename: arc.FilenameURL, Source: string(arc.Data), - Program: pgm, Options: arc.Options, - BaseInitContext: initctx, + BaseInitContext: i, RuntimeOptions: rtOpts, CompatibilityMode: compatMode, exports: make(map[string]goja.Callable), registry: piState.Registry, + cache: make(map[string]moduleCacheElement), + reverse: make(map[goja.ModuleRecord]*url.URL), + compiler: c, + } + m, err := bundle.resolveModule(nil, arc.FilenameURL.String()) + if err != nil { + return nil, err + } + err = m.Link() + if err != nil { + return nil, err } - if err = bundle.instantiate(piState.Logger, rt, bundle.BaseInitContext, 0); err != nil { + bundle.Module = m.(goja.CyclicModuleRecord) + var mi goja.ModuleInstance + if mi, err = bundle.instantiate(piState.Logger, rt, bundle.BaseInitContext, 0); err != nil { return nil, err } // Grab exported objects, but avoid overwriting options, which would // be initialized from the metadata.json at this point. - err = bundle.getExports(piState.Logger, rt, false) + err = bundle.getExports(piState.Logger, mi, false) if err != nil { return nil, err } @@ -185,16 +301,9 @@ func (b *Bundle) makeArchive() *lib.Archive { } // getExports validates and extracts exported objects -func (b *Bundle) getExports(logger logrus.FieldLogger, rt *goja.Runtime, options bool) error { - pgm := b.BaseInitContext.programs[b.Filename.String()] // this is the main script and it's always present - exportsV := pgm.module.Get("exports") - if goja.IsNull(exportsV) || goja.IsUndefined(exportsV) { - return errors.New("exports must be an object") - } - exports := exportsV.ToObject(rt) - - for _, k := range exports.Keys() { - v := exports.Get(k) +func (b *Bundle) getExports(logger logrus.FieldLogger, mi goja.ModuleInstance, options bool) error { + for _, k := range b.Module.GetExportedNames() { + v := mi.GetBindingValue(k) if fn, ok := goja.AssertFunction(v); ok && k != consts.Options { b.exports[k] = fn continue @@ -236,66 +345,55 @@ func (b *Bundle) Instantiate(logger logrus.FieldLogger, vuID uint64) (*BundleIns // runtime, but no state, to allow module-provided types to function within the init context. vuImpl := &moduleVUImpl{runtime: goja.New()} init := newBoundInitContext(b.BaseInitContext, vuImpl) - if err := b.instantiate(logger, vuImpl.runtime, init, vuID); err != nil { + var mi goja.ModuleInstance + var err error + if mi, err = b.instantiate(logger, vuImpl.runtime, init, vuID); err != nil { return nil, err } rt := vuImpl.runtime - pgm := init.programs[b.Filename.String()] // this is the main script and it's always present bi := &BundleInstance{ - Runtime: rt, - exports: make(map[string]goja.Callable), - env: b.RuntimeOptions.Env, - moduleVUImpl: vuImpl, - pgm: pgm, - } - - // Grab any exported functions that could be executed. These were - // already pre-validated in cmd.validateScenarioConfig(), just get them here. - exports := pgm.module.Get("exports").ToObject(rt) - for k := range b.exports { - fn, _ := goja.AssertFunction(exports.Get(k)) - bi.exports[k] = fn - } - - jsOptions := exports.Get("options") - var jsOptionsObj *goja.Object - if jsOptions == nil || goja.IsNull(jsOptions) || goja.IsUndefined(jsOptions) { - jsOptionsObj = rt.NewObject() - err := exports.Set("options", jsOptionsObj) - if err != nil { - return nil, fmt.Errorf("couldn't set exported options with merged values: %w", err) + Runtime: rt, + exports: make(map[string]goja.Callable), + env: b.RuntimeOptions.Env, + moduleVUImpl: vuImpl, + ModuleInstance: mi, + } + + for _, name := range b.Module.GetExportedNames() { + v := mi.GetBindingValue(name) + fn, ok := goja.AssertFunction(v) + if ok { + bi.exports[name] = fn } - } else { - jsOptionsObj = jsOptions.ToObject(rt) } - var instErr error - b.Options.ForEachSpecified("json", func(key string, val interface{}) { - if err := jsOptionsObj.Set(key, val); err != nil { - instErr = err - } - }) - + jsOptions := mi.GetBindingValue(consts.Options) + if !(jsOptions == nil || goja.IsNull(jsOptions) || goja.IsUndefined(jsOptions)) { + jsOptionsObj := jsOptions.ToObject(rt) + b.Options.ForEachSpecified("json", func(key string, val interface{}) { + if err := jsOptionsObj.Set(key, val); err != nil { + instErr = err + } + }) + } return bi, instErr } -// Instantiates the bundle into an existing runtime. Not public because it also messes with a bunch -// of other things, will potentially thrash data and makes a mess in it if the operation fails. +// fix +type vugetter struct { + vu *moduleVUImpl +} -func (b *Bundle) initializeProgramObject(rt *goja.Runtime, init *InitContext) programWithSource { - pgm := programWithSource{ - pgm: b.Program, - src: b.Source, - exports: rt.NewObject(), - module: rt.NewObject(), - } - _ = pgm.module.Set("exports", pgm.exports) - init.programs[b.Filename.String()] = pgm - return pgm +func (v vugetter) get() *moduleVUImpl { + return v.vu } -func (b *Bundle) instantiate(logger logrus.FieldLogger, rt *goja.Runtime, init *InitContext, vuID uint64) (err error) { +// Instantiates the bundle into an existing runtime. Not public because it also messes with a bunch +// of other things, will potentially thrash data and makes a mess in it if the operation fails. +func (b *Bundle) instantiate( + logger logrus.FieldLogger, rt *goja.Runtime, init *InitContext, vuID uint64, +) (goja.ModuleInstance, error) { rt.SetFieldNameMapper(common.FieldNameMapper{}) rt.SetRandSource(common.NewRandSource()) @@ -307,35 +405,34 @@ func (b *Bundle) instantiate(logger logrus.FieldLogger, rt *goja.Runtime, init * rt.Set("__VU", vuID) _ = rt.Set("console", newConsole(logger)) - if init.compatibilityMode == lib.CompatibilityModeExtended { + if b.CompatibilityMode == lib.CompatibilityModeExtended { rt.Set("global", rt.GlobalObject()) } + rt.GlobalObject().DefineDataProperty("vugetter", + rt.ToValue(vugetter{init.moduleVUImpl}), goja.FLAG_FALSE, goja.FLAG_FALSE, goja.FLAG_FALSE) initenv := &common.InitEnvironment{ Logger: logger, FileSystems: init.filesystems, - CWD: init.pwd, + CWD: loader.Dir(b.Filename), Registry: b.registry, } unbindInit := b.setInitGlobals(rt, init) init.moduleVUImpl.ctx = context.Background() init.moduleVUImpl.initEnv = initenv init.moduleVUImpl.eventLoop = eventloop.New(init.moduleVUImpl) - pgm := b.initializeProgramObject(rt, init) - + var err error err = common.RunWithPanicCatching(logger, rt, func() error { return init.moduleVUImpl.eventLoop.Start(func() error { - f, errRun := rt.RunProgram(b.Program) - if errRun != nil { - return errRun - } - if call, ok := goja.AssertFunction(f); ok { - if _, errRun = call(pgm.exports, pgm.module, pgm.exports); errRun != nil { - return errRun - } + promise := rt.CyclicModuleRecordEvaluate(b.Module, b.resolveModule) + switch promise.State() { + case goja.PromiseStateRejected: + return promise.Result().Export().(error) + case goja.PromiseStateFulfilled: return nil + default: + panic("TLA not supported in k6 at the moment") } - panic("Somehow a commonjs main module is not wrapped in a function") }) }) @@ -344,14 +441,8 @@ func (b *Bundle) instantiate(logger logrus.FieldLogger, rt *goja.Runtime, init * if errors.As(err, &exception) { err = &scriptException{inner: exception} } - return err - } - exportsV := pgm.module.Get("exports") - if goja.IsNull(exportsV) { - return errors.New("exports must be an object") + return nil, err } - pgm.exports = exportsV.ToObject(rt) - init.programs[b.Filename.String()] = pgm unbindInit() init.moduleVUImpl.ctx = nil init.moduleVUImpl.initEnv = nil @@ -364,7 +455,18 @@ func (b *Bundle) instantiate(logger logrus.FieldLogger, rt *goja.Runtime, init * rt.SetRandSource(common.NewRandSource()) - return nil + return rt.GetModuleInstance(b.Module), nil +} + +func (b *Bundle) getCurrentModuleScript(rt *goja.Runtime) goja.ModuleRecord { + // TODO implement this correctly in goja https://262.ecma-international.org/12.0/#sec-getactivescriptormodule + var parent string + var buf [2]goja.StackFrame + frames := rt.CaptureCallStack(2, buf[:0]) + parent = frames[1].SrcName() + + parentModule, _ := b.resolveModule(nil, parent) + return parentModule } func (b *Bundle) setInitGlobals(rt *goja.Runtime, init *InitContext) (unset func()) { @@ -373,7 +475,42 @@ func (b *Bundle) setInitGlobals(rt *goja.Runtime, init *InitContext) (unset func panic(fmt.Errorf("failed to set '%s' global object: %w", k, err)) } } - mustSet("require", init.Require) + mustSet("require", func(specifier string) (interface{}, error) { + // TODO get this in a method ?!? or a pure function + parentModule := b.getCurrentModuleScript(rt) + m, err := b.resolveModule(parentModule, specifier) + if err != nil { + return nil, err + } + if wm, ok := m.(*wrappedGoModule); ok { + // TODO go through evaluation + return toESModuleExports(wm.m.NewModuleInstance(init.moduleVUImpl).Exports()), nil + } + err = m.Link() + if err != nil { + return nil, err + } + var promise *goja.Promise + if c, ok := m.(goja.CyclicModuleRecord); ok { + promise = rt.CyclicModuleRecordEvaluate(c, b.resolveModule) + } else { + panic("shouldn't happen") + } + switch promise.State() { + case goja.PromiseStateRejected: + err = promise.Result().Export().(error) + case goja.PromiseStateFulfilled: + default: + panic("TLA not supported in k6 at the moment") + } + if err != nil { + return nil, err + } + if cjs, ok := m.(*wrappedCommonJS); ok { + return rt.GetModuleInstance(cjs).(*wrappedCommonJSInstance).exports, nil //nolint:forcetypeassert + } + return rt.NamespaceObjectFor(m), nil // TODO fix this probably needs to be more exteneted + }) mustSet("open", init.Open) return func() { mustSet("require", goja.Undefined()) diff --git a/js/bundle_test.go b/js/bundle_test.go index 20422736c33..54e32cd390b 100644 --- a/js/bundle_test.go +++ b/js/bundle_test.go @@ -83,8 +83,8 @@ func TestNewBundle(t *testing.T) { t.Run("Invalid", func(t *testing.T) { t.Parallel() _, err := getSimpleBundle(t, "/script.js", "\x00") - require.NotNil(t, err) - require.Contains(t, err.Error(), "SyntaxError: file:///script.js: Unexpected character '\x00' (1:0)\n> 1 | \x00\n") + require.Error(t, err) + require.ErrorContains(t, err, "file:///script.js: Line 1:1 Unexpected token ILLEGAL (and 1 more errors)") }) t.Run("Error", func(t *testing.T) { t.Parallel() @@ -96,7 +96,7 @@ func TestNewBundle(t *testing.T) { t.Run("InvalidExports", func(t *testing.T) { t.Parallel() _, err := getSimpleBundle(t, "/script.js", `module.exports = null`) - require.EqualError(t, err, "exports must be an object") + require.EqualError(t, err, "commonjs exports must be an object") }) t.Run("DefaultUndefined", func(t *testing.T) { t.Parallel() @@ -161,11 +161,6 @@ func TestNewBundle(t *testing.T) { "InvalidCompat", "es1", `export default function() {};`, `invalid compatibility mode "es1". Use: "extended", "base"`, }, - // ES2015 modules are not supported - { - "Modules", "base", `export default function() {};`, - "file:///script.js: Line 2:1 Unexpected reserved word (and 2 more errors)", - }, // BigInt is not supported { "BigInt", "base", @@ -502,7 +497,6 @@ func TestNewBundleFromArchive(t *testing.T) { checkArchive(t, arc, lib.RuntimeOptions{}, "") // default options checkArchive(t, arc, extCompatModeRtOpts, "") - checkArchive(t, arc, baseCompatModeRtOpts, "Unexpected reserved word") }) t.Run("es6_script_explicit", func(t *testing.T) { @@ -513,7 +507,6 @@ func TestNewBundleFromArchive(t *testing.T) { checkArchive(t, arc, lib.RuntimeOptions{}, "") checkArchive(t, arc, extCompatModeRtOpts, "") - checkArchive(t, arc, baseCompatModeRtOpts, "Unexpected reserved word") }) t.Run("es5_script_with_extended", func(t *testing.T) { @@ -538,13 +531,6 @@ func TestNewBundleFromArchive(t *testing.T) { checkArchive(t, arc, baseCompatModeRtOpts, "") }) - t.Run("es6_archive_with_wrong_compat_mode", func(t *testing.T) { - t.Parallel() - arc, err := getArchive(t, es6Code, baseCompatModeRtOpts) - require.Error(t, err) - require.Nil(t, arc) - }) - t.Run("messed_up_archive", func(t *testing.T) { t.Parallel() arc, err := getArchive(t, es6Code, extCompatModeRtOpts) @@ -552,7 +538,6 @@ func TestNewBundleFromArchive(t *testing.T) { arc.CompatibilityMode = "blah" // intentionally break the archive checkArchive(t, arc, lib.RuntimeOptions{}, "invalid compatibility mode") // fails when it uses the archive one checkArchive(t, arc, extCompatModeRtOpts, "") // works when I force the compat mode - checkArchive(t, arc, baseCompatModeRtOpts, "Unexpected reserved word") // failes because of ES6 }) t.Run("script_options_dont_overwrite_metadata", func(t *testing.T) { @@ -772,7 +757,7 @@ func TestBundleInstantiate(t *testing.T) { bi, err := b.Instantiate(logger, 0) require.NoError(t, err) // Ensure `options` properties are correctly marshalled - jsOptions := bi.pgm.exports.Get("options").ToObject(bi.Runtime) + jsOptions := bi.getExported("options").ToObject(bi.Runtime) vus := jsOptions.Get("vus").Export() require.Equal(t, int64(5), vus) tdt := jsOptions.Get("teardownTimeout").Export() @@ -783,7 +768,7 @@ func TestBundleInstantiate(t *testing.T) { b.Options.VUs = null.IntFrom(10) bi2, err := b.Instantiate(logger, 0) require.NoError(t, err) - jsOptions = bi2.pgm.exports.Get("options").ToObject(bi2.Runtime) + jsOptions = bi2.getExported("options").ToObject(bi2.Runtime) vus = jsOptions.Get("vus").Export() require.Equal(t, int64(10), vus) b.Options.VUs = optOrig diff --git a/js/commonjs_module.go b/js/commonjs_module.go new file mode 100644 index 00000000000..eb8b202776d --- /dev/null +++ b/js/commonjs_module.go @@ -0,0 +1,114 @@ +package js + +import ( + "errors" + "sync" + + "github.com/dop251/goja" +) + +// TODO a lot of tests around this +type wrappedCommonJS struct { + prg *goja.Program + main bool + exportedNames []string + o sync.Once +} + +var _ goja.CyclicModuleRecord = &wrappedCommonJS{} + +func wrapCommonJS(prg *goja.Program, main bool) goja.ModuleRecord { + return &wrappedCommonJS{prg: prg, main: main} +} + +func (w *wrappedCommonJS) Link() error { + return nil // TODO fix +} + +func (w *wrappedCommonJS) InitializeEnvironment() error { + return nil // TODO fix +} + +func (w *wrappedCommonJS) Instantiate(rt *goja.Runtime) (goja.CyclicModuleInstance, error) { + return &wrappedCommonJSInstance{w: w, rt: rt}, nil +} + +func (w *wrappedCommonJS) RequestedModules() []string { + return nil // TODO fix +} + +func (w *wrappedCommonJS) Evaluate(rt *goja.Runtime) *goja.Promise { + panic("this should be called in the current implementation") +} + +func (w wrappedCommonJS) GetExportedNames(set ...goja.ModuleRecord) []string { + w.o.Do(func() { + panic("some how we first got to GetExportedNames of a commonjs module before they were set" + + "- this should never happen and is some kind of a bug") + }) + return w.exportedNames +} + +func (w *wrappedCommonJS) ResolveExport( + exportName string, set ...goja.ResolveSetElement, +) (*goja.ResolvedBinding, bool) { + return &goja.ResolvedBinding{ + Module: w, + BindingName: exportName, + }, false +} + +type wrappedCommonJSInstance struct { + exports *goja.Object + rt *goja.Runtime + w *wrappedCommonJS + isEsModuleMarked bool +} + +func (wmi *wrappedCommonJSInstance) HasTLA() bool { return false } +func (wmi *wrappedCommonJSInstance) RequestedModules() []string { + return wmi.w.RequestedModules() +} + +func (wmi *wrappedCommonJSInstance) ExecuteModule(rt *goja.Runtime, _, _ func(interface{})) (goja.CyclicModuleInstance, error) { + v, err := rt.RunProgram(wmi.w.prg) + if err != nil { + return nil, err + } + + module := rt.NewObject() + wmi.exports = rt.NewObject() + _ = module.Set("exports", wmi.exports) + call, ok := goja.AssertFunction(v) + if !ok { + panic("Somehow a commonjs module is not wrapped in a function - this is a k6 bug") + } + if _, err = call(wmi.exports, module, wmi.exports); err != nil { + return nil, err + } + exportsV := module.Get("exports") + if goja.IsNull(exportsV) { + return nil, errors.New("commonjs exports must be an object") + } + wmi.exports = exportsV.ToObject(rt) + + wmi.w.o.Do(func() { + wmi.w.exportedNames = wmi.exports.Keys() + }) + __esModule := wmi.exports.Get("__esModule") + wmi.isEsModuleMarked = __esModule != nil && __esModule.ToBoolean() + return wmi, nil +} + +func (wmi *wrappedCommonJSInstance) GetBindingValue(name string) goja.Value { + if name == "default" { + if wmi.w.main || wmi.isEsModuleMarked { // hack for just the main file as it worked like that before :facepalm: + d := wmi.exports.Get("default") + if d != nil { + return d + } + } + return wmi.exports + } + return wmi.exports.Get(name) +} diff --git a/js/compiler/compiler.go b/js/compiler/compiler.go index a98e26ddec9..d9a7a0a35cf 100644 --- a/js/compiler/compiler.go +++ b/js/compiler/compiler.go @@ -4,13 +4,9 @@ import ( _ "embed" // we need this for embedding Babel "encoding/json" "errors" - "fmt" - "os" - "strconv" - "sync" - "time" "github.com/dop251/goja" + "github.com/dop251/goja/ast" "github.com/dop251/goja/parser" "github.com/go-sourcemap/sourcemap" "github.com/sirupsen/logrus" @@ -18,72 +14,9 @@ import ( "go.k6.io/k6/lib" ) -//go:embed lib/babel.min.js -var babelSrc string //nolint:gochecknoglobals - -var ( - DefaultOpts = map[string]interface{}{ - // "presets": []string{"latest"}, - "plugins": []interface{}{ - // es2015 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2015/src/index.js - // in goja - // []interface{}{"transform-es2015-template-literals", map[string]interface{}{"loose": false, "spec": false}}, - // "transform-es2015-literals", // in goja - // "transform-es2015-function-name", // in goja - // []interface{}{"transform-es2015-arrow-functions", map[string]interface{}{"spec": false}}, // in goja - // "transform-es2015-block-scoped-functions", // in goja - // []interface{}{"transform-es2015-classes", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-object-super", // in goja - // "transform-es2015-shorthand-properties", // in goja - // "transform-es2015-duplicate-keys", // in goja - // []interface{}{"transform-es2015-computed-properties", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-for-of", // in goja - // "transform-es2015-sticky-regex", // in goja - // "transform-es2015-unicode-regex", // in goja - // "check-es2015-constants", // in goja - // []interface{}{"transform-es2015-spread", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-parameters", // in goja - // []interface{}{"transform-es2015-destructuring", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-block-scoping", // in goja - // "transform-es2015-typeof-symbol", // in goja - // all the other module plugins are just dropped - []interface{}{"transform-es2015-modules-commonjs", map[string]interface{}{"loose": false}}, - // "transform-regenerator", // Doesn't really work unless regeneratorRuntime is also added - - // es2016 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2016/src/index.js - // "transform-exponentiation-operator", - - // es2017 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2017/src/index.js - // "syntax-trailing-function-commas", // in goja - // "transform-async-to-generator", // Doesn't really work unless regeneratorRuntime is also added - }, - "ast": false, - "sourceMaps": false, - "babelrc": false, - "compact": false, - "retainLines": true, - "highlightCode": false, - } - - maxSrcLenForBabelSourceMap = 250 * 1024 //nolint:gochecknoglobals - maxSrcLenForBabelSourceMapOnce sync.Once //nolint:gochecknoglobals - - onceBabelCode sync.Once //nolint:gochecknoglobals - globalBabelCode *goja.Program //nolint:gochecknoglobals - errGlobalBabelCode error //nolint:gochecknoglobals - onceBabel sync.Once //nolint:gochecknoglobals - globalBabel *babel //nolint:gochecknoglobals -) - -const ( - maxSrcLenForBabelSourceMapVarName = "K6_DEBUG_SOURCEMAP_FILESIZE_LIMIT" - sourceMapURLFromBabel = "k6://internal-should-not-leak/file.map" -) - // A Compiler compiles JavaScript source code (ES5.1 or ES6) into a goja.Program type Compiler struct { logger logrus.FieldLogger - babel *babel Options Options } @@ -92,63 +25,6 @@ func New(logger logrus.FieldLogger) *Compiler { return &Compiler{logger: logger} } -// initializeBabel initializes a separate (non-global) instance of babel specifically for this Compiler. -// An error is returned only if babel itself couldn't be parsed/run which should never be possible. -func (c *Compiler) initializeBabel() error { - var err error - if c.babel == nil { - c.babel, err = newBabel() - } - return err -} - -// Transform the given code into ES5 -func (c *Compiler) Transform(src, filename string, inputSrcMap []byte) (code string, srcMap []byte, err error) { - if c.babel == nil { - onceBabel.Do(func() { - globalBabel, err = newBabel() - }) - c.babel = globalBabel - } - if err != nil { - return - } - - sourceMapEnabled := c.Options.SourceMapLoader != nil - maxSrcLenForBabelSourceMapOnce.Do(func() { - // TODO: drop this code and everything it's connected to when babel is dropped - v := os.Getenv(maxSrcLenForBabelSourceMapVarName) - if len(v) > 0 { - i, err := strconv.Atoi(v) //nolint:govet // we shadow err on purpose - if err != nil { - c.logger.Warnf("Tried to parse %q from %s as integer but couldn't %s\n", - v, maxSrcLenForBabelSourceMapVarName, err) - return - } - maxSrcLenForBabelSourceMap = i - } - }) - if sourceMapEnabled && len(src) > maxSrcLenForBabelSourceMap { - sourceMapEnabled = false - c.logger.Warnf("The source for `%s` needs to go through babel but is over %d bytes. "+ - "For performance reasons source map support will be disabled for this particular file.", - filename, maxSrcLenForBabelSourceMap) - } - - // check that babel will likely be able to parse the inputSrcMap - if sourceMapEnabled && len(inputSrcMap) != 0 { - if err = verifySourceMapForBabel(inputSrcMap); err != nil { - sourceMapEnabled = false - inputSrcMap = nil - c.logger.WithError(err).Warnf( - "The source for `%s` needs to be transpiled by Babel, but its source map will"+ - " not be accepted by Babel, so it was disabled", filename) - } - } - code, srcMap, err = c.babel.transformImpl(c.logger, src, filename, sourceMapEnabled, inputSrcMap) - return -} - // Options are options to the compiler type Options struct { CompatibilityMode lib.CompatibilityMode @@ -168,6 +44,11 @@ type compilationState struct { compiler *Compiler } +// Parse the program in the given CompatibilityMode, wrapping it between pre and post code +func (c *Compiler) Parse(src, filename string, wrap bool) (*ast.Program, bool, error) { + return c.parseImpl(src, filename, wrap, c.Options.CompatibilityMode, nil) +} + // Compile the program in the given CompatibilityMode, wrapping it between pre and post code // TODO isESM will be used once goja support ESM modules natively func (c *Compiler) Compile(src, filename string, isESM bool) (*goja.Program, string, error) { @@ -178,12 +59,6 @@ func (c *Compiler) Compile(src, filename string, isESM bool) (*goja.Program, str // it not only gets the file from disk in the simple case, but also returns it if the map was generated from babel // additioanlly it fixes off by one error in commonjs dependencies due to having to wrap them in a function. func (c *compilationState) sourceMapLoader(path string) ([]byte, error) { - if path == sourceMapURLFromBabel { - if c.wrapped { - return c.increaseMappingsByOne(c.srcMap) - } - return c.srcMap, nil - } c.srcMap, c.srcMapError = c.compiler.Options.SourceMapLoader(path) if c.srcMapError != nil { c.couldntLoadSourceMap = true @@ -201,70 +76,61 @@ func (c *compilationState) sourceMapLoader(path string) ([]byte, error) { return c.srcMap, nil } -func (c *Compiler) compileImpl( +func (c *Compiler) parseImpl( src, filename string, wrap bool, compatibilityMode lib.CompatibilityMode, srcMap []byte, -) (*goja.Program, string, error) { +) (*ast.Program, bool, error) { code := src state := compilationState{srcMap: srcMap, compiler: c, wrapped: wrap} - if wrap { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne + if state.wrapped { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne code = "(function(module, exports){\n" + code + "\n})\n" } opts := parser.WithDisableSourceMaps if c.Options.SourceMapLoader != nil { opts = parser.WithSourceMapLoader(state.sourceMapLoader) } - ast, err := parser.ParseFile(nil, filename, code, 0, opts) + ast, err := parser.ParseFile(nil, filename, code, 0, opts, parser.IsModule) if state.couldntLoadSourceMap { state.couldntLoadSourceMap = false // reset // we probably don't want to abort scripts which have source maps but they can't be found, // this also will be a breaking change, so if we couldn't we retry with it disabled c.logger.WithError(state.srcMapError).Warnf("Couldn't load source map for %s", filename) - ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps) + ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps, parser.IsModule) } + if err != nil { - if compatibilityMode == lib.CompatibilityModeExtended { - code, state.srcMap, err = c.Transform(src, filename, state.srcMap) - if err != nil { - return nil, code, err - } - // the compatibility mode "decreases" here as we shouldn't transform twice - return c.compileImpl(code, filename, wrap, lib.CompatibilityModeBase, state.srcMap) - } - return nil, code, err + return nil, false, err } - pgm, err := goja.CompileAST(ast, c.Options.Strict) - return pgm, code, err -} - -type babel struct { - vm *goja.Runtime - this goja.Value - transform goja.Callable - m sync.Mutex + isModule := len(ast.ExportEntries) > 0 || len(ast.ImportEntries) > 0 + return ast, isModule, nil } -func newBabel() (*babel, error) { - onceBabelCode.Do(func() { - globalBabelCode, errGlobalBabelCode = goja.Compile("", babelSrc, false) - }) - if errGlobalBabelCode != nil { - return nil, errGlobalBabelCode +func (c *Compiler) compileImpl( + src, filename string, wrap bool, compatibilityMode lib.CompatibilityMode, srcMap []byte, +) (*goja.Program, string, error) { + code := src + state := compilationState{srcMap: srcMap, compiler: c, wrapped: wrap} + if wrap { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne + code = "(function(module, exports){\n" + code + "\n})\n" } - vm := goja.New() - _, err := vm.RunProgram(globalBabelCode) - if err != nil { - return nil, err + opts := parser.WithDisableSourceMaps + if c.Options.SourceMapLoader != nil { + opts = parser.WithSourceMapLoader(state.sourceMapLoader) } + ast, err := parser.ParseFile(nil, filename, code, 0, opts, parser.IsModule) - this := vm.Get("Babel") - bObj := this.ToObject(vm) - result := &babel{vm: vm, this: this} - if err = vm.ExportTo(bObj.Get("transform"), &result.transform); err != nil { - return nil, err + if state.couldntLoadSourceMap { + state.couldntLoadSourceMap = false // reset + // we probably don't want to abort scripts which have source maps but they can't be found, + // this also will be a breaking change, so if we couldn't we retry with it disabled + c.logger.WithError(state.srcMapError).Warnf("Couldn't load source map for %s", filename) + ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps, parser.IsModule) } - - return result, err + if err != nil { + return nil, code, err + } + pgm, err := goja.CompileAST(ast, c.Options.Strict) + return pgm, code, err } // increaseMappingsByOne increases the lines in the sourcemap by line so that it fixes the case where we need to wrap a @@ -299,65 +165,6 @@ func (c *compilationState) increaseMappingsByOne(sourceMap []byte) ([]byte, erro return json.Marshal(m) } -// transformImpl the given code into ES5, while synchronizing to ensure only a single -// bundle instance / Goja VM is in use at a time. -func (b *babel) transformImpl( - logger logrus.FieldLogger, src, filename string, sourceMapsEnabled bool, inputSrcMap []byte, -) (string, []byte, error) { - b.m.Lock() - defer b.m.Unlock() - opts := make(map[string]interface{}) - for k, v := range DefaultOpts { - opts[k] = v - } - if sourceMapsEnabled { - // given that the source map should provide accurate lines(and columns), this option isn't needed - // it also happens to make very long and awkward lines, especially around import/exports and definitely a lot - // less readable overall. Hopefully it also has some performance improvement not trying to keep the same lines - opts["retainLines"] = false - opts["sourceMaps"] = true - if inputSrcMap != nil { - srcMap := new(map[string]interface{}) - if err := json.Unmarshal(inputSrcMap, &srcMap); err != nil { - return "", nil, err - } - opts["inputSourceMap"] = srcMap - } - } - opts["filename"] = filename - - startTime := time.Now() - v, err := b.transform(b.this, b.vm.ToValue(src), b.vm.ToValue(opts)) - if err != nil { - return "", nil, err - } - logger.WithField("t", time.Since(startTime)).Debug("Babel: Transformed") - - vO := v.ToObject(b.vm) - var code string - if err = b.vm.ExportTo(vO.Get("code"), &code); err != nil { - return code, nil, err - } - if !sourceMapsEnabled { - return code, nil, nil - } - - // this is to make goja try to load a sourcemap. - // it is a special url as it should never leak outside of this code - // additionally the alternative support from babel is to embed *the whole* sourcemap at the end - code += "\n//# sourceMappingURL=" + sourceMapURLFromBabel - stringify, err := b.vm.RunString("(function(m) { return JSON.stringify(m)})") - if err != nil { - return code, nil, err - } - c, _ := goja.AssertFunction(stringify) - mapAsJSON, err := c(goja.Undefined(), vO.Get("map")) - if err != nil { - return code, nil, err - } - return code, []byte(mapAsJSON.String()), nil -} - // Pool is a pool of compilers so it can be used easier in parallel tests as they have their own babel. type Pool struct { c chan *Compiler @@ -373,10 +180,6 @@ func NewPool(logger logrus.FieldLogger, count int) *Pool { for i := 0; i < count; i++ { go func() { co := New(logger) - err := co.initializeBabel() - if err != nil { - panic(err) - } c.Put(co) }() } @@ -394,27 +197,3 @@ func (c *Pool) Get() *Compiler { func (c *Pool) Put(co *Compiler) { c.c <- co } - -func verifySourceMapForBabel(srcMap []byte) error { - // this function exists to do what babel checks in sourcemap before we give it to it. - m := make(map[string]json.RawMessage) - err := json.Unmarshal(srcMap, &m) - if err != nil { - return fmt.Errorf("source map is not valid json: %w", err) - } - // there are no checks on it's value in babel - // we technically only support v3 though - if _, ok := m["version"]; !ok { - return fmt.Errorf("source map missing required 'version' field") - } - - // This actually gets checked by the go implementation so it's not really necessary - if _, ok := m["mappings"]; !ok { - return fmt.Errorf("source map missing required 'mappings' field") - } - // the go implementation checks the value even if it doesn't require it exists - if _, ok := m["sources"]; !ok { - return fmt.Errorf("source map missing required 'sources' field") - } - return nil -} diff --git a/js/compiler/compiler_test.go b/js/compiler/compiler_test.go index 17d8a0ff483..88055e280b7 100644 --- a/js/compiler/compiler_test.go +++ b/js/compiler/compiler_test.go @@ -1,12 +1,11 @@ package compiler import ( - "errors" "io/ioutil" - "strings" "testing" "github.com/dop251/goja" + "github.com/dop251/goja/parser" "github.com/sirupsen/logrus" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" @@ -15,55 +14,6 @@ import ( "go.k6.io/k6/lib/testutils" ) -func TestTransform(t *testing.T) { - t.Parallel() - t.Run("blank", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform("", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict";`, src) - }) - t.Run("double-arrow", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform("()=> true", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict";() => true;`, src) - }) - t.Run("longer", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform(strings.Join([]string{ - `function add(a, b) {`, - ` return a + b;`, - `};`, - ``, - `let res = add(1, 2);`, - }, "\n"), "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, strings.Join([]string{ - `"use strict";function add(a, b) {`, - ` return a + b;`, - `};`, - ``, - `let res = add(1, 2);`, - }, "\n"), src) - }) - - t.Run("double-arrow with sourceMap", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - c.Options.SourceMapLoader = func(string) ([]byte, error) { return nil, errors.New("shouldn't be called") } - src, _, err := c.Transform("()=> true", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict"; - -() => true; -//# sourceMappingURL=k6://internal-should-not-leak/file.map`, src) - }) -} - func TestCompile(t *testing.T) { t.Parallel() t.Run("ES5", func(t *testing.T) { @@ -100,43 +50,25 @@ func TestCompile(t *testing.T) { } }) - t.Run("ES5 Invalid", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src := `1+(function() { return 2; )()` - c.Options.CompatibilityMode = lib.CompatibilityModeExtended - _, _, err := c.Compile(src, "script.js", false) - assert.IsType(t, &goja.Exception{}, err) - assert.Contains(t, err.Error(), `SyntaxError: script.js: Unexpected token (1:26) -> 1 | 1+(function() { return 2; )()`) - }) t.Run("ES6", func(t *testing.T) { t.Parallel() c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended - pgm, code, err := c.Compile(`import "something"`, "script.js", true) - require.NoError(t, err) - assert.Equal(t, `"use strict";require("something");`, - code) - rt := goja.New() - var requireCalled bool - require.NoError(t, rt.Set("require", func(s string) { - assert.Equal(t, "something", s) - requireCalled = true - })) - _, err = rt.RunProgram(pgm) + _, code, err := c.Compile(`import "something"`, "script.js", true) require.NoError(t, err) - require.True(t, requireCalled) + assert.Equal(t, `import "something"`, code) + // TODO running this is a bit more involved :( }) t.Run("Wrap", func(t *testing.T) { + // This only works with `require` as wrapping means the import/export won't be top level and that is forbidden t.Parallel() c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended - pgm, code, err := c.Compile(`import "something";`, "script.js", false) + pgm, code, err := c.Compile(`require("something");`, "script.js", false) require.NoError(t, err) assert.Equal(t, `(function(module, exports){ -"use strict";require("something"); +require("something"); }) `, code) var requireCalled bool @@ -159,9 +91,8 @@ func TestCompile(t *testing.T) { c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended _, _, err := c.Compile(`1+(=>2)()`, "script.js", true) - assert.IsType(t, &goja.Exception{}, err) - assert.Contains(t, err.Error(), `SyntaxError: script.js: Unexpected token (1:3) -> 1 | 1+(=>2)()`) + assert.IsType(t, parser.ErrorList{}, err) + assert.ErrorContains(t, err, `script.js: Line 1:4 Unexpected token => (and 1 more errors)`) }) } @@ -197,6 +128,7 @@ func TestCorruptSourceMap(t *testing.T) { func TestCorruptSourceMapOnlyForBabel(t *testing.T) { t.Parallel() + // This test is now kind of pointless // this a valid source map for the go implementation but babel doesn't like it corruptSourceMap := []byte(`{"mappings": ";"}`) @@ -216,15 +148,10 @@ func TestCorruptSourceMapOnlyForBabel(t *testing.T) { return corruptSourceMap, nil }, } - _, _, err := compiler.Compile("import 'something';\n//# sourceMappingURL=somefile", "somefile", false) + _, _, err := compiler.Compile("import 'something';\n//# sourceMappingURL=somefile", "somefile", true) require.NoError(t, err) entries := hook.Drain() - require.Len(t, entries, 1) - msg, err := entries[0].String() // we need this in order to get the field error - require.NoError(t, err) - - require.Contains(t, msg, `needs to be transpiled by Babel, but its source map will not be accepted by Babel`) - require.Contains(t, msg, `source map missing required 'version' field`) + require.Empty(t, entries) } func TestMinimalSourceMap(t *testing.T) { 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j("function",!0)};R.parenR.updateContext=R.braceR.updateContext=function(){if(1===this.state.context.length)return void(this.state.exprAllowed=!0);var e=this.state.context.pop();e===U.braceStatement&&this.curContext()===U.functionExpression?(this.state.context.pop(),this.state.exprAllowed=!1):e===U.templateQuasi?this.state.exprAllowed=!0:this.state.exprAllowed=!e.isExpr},R.name.updateContext=function(e){this.state.exprAllowed=!1,e!==R._let&&e!==R._const&&e!==R._var||M.test(this.input.slice(this.state.end))&&(this.state.exprAllowed=!0)},R.braceL.updateContext=function(e){this.state.context.push(this.braceIsBlock(e)?U.braceStatement:U.braceExpression),this.state.exprAllowed=!0},R.dollarBraceL.updateContext=function(){this.state.context.push(U.templateQuasi),this.state.exprAllowed=!0},R.parenL.updateContext=function(e){var t=e===R._if||e===R._for||e===R._with||e===R._while;this.state.context.push(t?U.parenStatement:U.parenExpression),this.state.exprAllowed=!0},R.incDec.updateContext=function(){},R._function.updateContext=function(){this.curContext()!==U.braceStatement&&this.state.context.push(U.functionExpression),this.state.exprAllowed=!1},R.backQuote.updateContext=function(){this.curContext()===U.template?this.state.context.pop():this.state.context.push(U.template),this.state.exprAllowed=!1};var V=function e(t,r){w(this,e),this.line=t,this.column=r},G=function e(t,r){w(this,e),this.start=t,this.end=r},W=function(){function e(){w(this,e)}return e.prototype.init=function(e,t){return this.strict=!1!==e.strictMode&&"module"===e.sourceType,this.input=t,this.potentialArrowAt=-1,this.inMethod=this.inFunction=this.inGenerator=this.inAsync=this.inPropertyName=this.inType=this.inClassProperty=this.noAnonFunctionType=!1,this.labels=[],this.decorators=[],this.tokens=[],this.comments=[],this.trailingComments=[],this.leadingComments=[],this.commentStack=[],this.pos=this.lineStart=0,this.curLine=e.startLine,this.type=R.eof,this.value=null,this.start=this.end=this.pos,this.startLoc=this.endLoc=this.curPosition(),this.lastTokEndLoc=this.lastTokStartLoc=null,this.lastTokStart=this.lastTokEnd=this.pos,this.context=[U.braceStatement],this.exprAllowed=!0,this.containsEsc=this.containsOctal=!1,this.octalPosition=null,this.invalidTemplateEscapePosition=null,this.exportedIdentifiers=[],this},e.prototype.curPosition=function(){return new V(this.curLine,this.pos-this.lineStart)},e.prototype.clone=function(t){var r=new e;for(var n in this){var i=this[n];t&&"context"!==n||!Array.isArray(i)||(i=i.slice()),r[n]=i}return r},e}(),Y=function e(t){w(this,e),this.type=t.type,this.value=t.value,this.start=t.start,this.end=t.end,this.loc=new G(t.startLoc,t.endLoc)},q=function(){function e(t,r){w(this,e),this.state=new W,this.state.init(t,r)}return e.prototype.next=function(){this.isLookahead||this.state.tokens.push(new Y(this.state)),this.state.lastTokEnd=this.state.end,this.state.lastTokStart=this.state.start,this.state.lastTokEndLoc=this.state.endLoc,this.state.lastTokStartLoc=this.state.startLoc,this.nextToken()},e.prototype.eat=function(e){return!!this.match(e)&&(this.next(),!0)},e.prototype.match=function(e){return this.state.type===e},e.prototype.isKeyword=function(e){return g(e)},e.prototype.lookahead=function(){var e=this.state;this.state=e.clone(!0),this.isLookahead=!0,this.next(),this.isLookahead=!1;var t=this.state.clone(!0);return this.state=e,t},e.prototype.setStrict=function(e){if(this.state.strict=e,this.match(R.num)||this.match(R.string)){for(this.state.pos=this.state.start;this.state.pos=this.input.length?this.finishToken(R.eof):e.override?e.override(this):this.readToken(this.fullCharCodeAtPos())},e.prototype.readToken=function(e){return i(e)||92===e?this.readWord():this.getTokenFromCode(e)},e.prototype.fullCharCodeAtPos=function(){var e=this.input.charCodeAt(this.state.pos);return e<=55295||e>=57344?e:(e<<10)+this.input.charCodeAt(this.state.pos+1)-56613888},e.prototype.pushComment=function(e,t,r,n,i,s){var a={type:e?"CommentBlock":"CommentLine",value:t,start:r,end:n,loc:new G(i,s)};this.isLookahead||(this.state.tokens.push(a),this.state.comments.push(a),this.addComment(a))},e.prototype.skipBlockComment=function(){var e=this.state.curPosition(),t=this.state.pos,r=this.input.indexOf("*/",this.state.pos+=2);-1===r&&this.raise(this.state.pos-2,"Unterminated comment"),this.state.pos=r+2,N.lastIndex=t;for(var n=void 0;(n=N.exec(this.input))&&n.index8&&e<14||e>=5760&&L.test(String.fromCharCode(e))))break e;++this.state.pos}}},e.prototype.finishToken=function(e,t){this.state.end=this.state.pos,this.state.endLoc=this.state.curPosition();var r=this.state.type;this.state.type=e,this.state.value=t,this.updateContext(r)},e.prototype.readToken_dot=function(){var e=this.input.charCodeAt(this.state.pos+1);if(e>=48&&e<=57)return this.readNumber(!0);var t=this.input.charCodeAt(this.state.pos+2);return 46===e&&46===t?(this.state.pos+=3,this.finishToken(R.ellipsis)):(++this.state.pos,this.finishToken(R.dot))},e.prototype.readToken_slash=function(){return this.state.exprAllowed?(++this.state.pos,this.readRegexp()):61===this.input.charCodeAt(this.state.pos+1)?this.finishOp(R.assign,2):this.finishOp(R.slash,1)},e.prototype.readToken_mult_modulo=function(e){var t=42===e?R.star:R.modulo,r=1,n=this.input.charCodeAt(this.state.pos+1);return 42===n&&(r++,n=this.input.charCodeAt(this.state.pos+2),t=R.exponent),61===n&&(r++,t=R.assign),this.finishOp(t,r)},e.prototype.readToken_pipe_amp=function(e){var t=this.input.charCodeAt(this.state.pos+1);return t===e?this.finishOp(124===e?R.logicalOR:R.logicalAND,2):61===t?this.finishOp(R.assign,2):124===e&&125===t&&this.hasPlugin("flow")?this.finishOp(R.braceBarR,2):this.finishOp(124===e?R.bitwiseOR:R.bitwiseAND,1)},e.prototype.readToken_caret=function(){return 61===this.input.charCodeAt(this.state.pos+1)?this.finishOp(R.assign,2):this.finishOp(R.bitwiseXOR,1)},e.prototype.readToken_plus_min=function(e){var t=this.input.charCodeAt(this.state.pos+1);return t===e?45===t&&62===this.input.charCodeAt(this.state.pos+2)&&M.test(this.input.slice(this.state.lastTokEnd,this.state.pos))?(this.skipLineComment(3),this.skipSpace(),this.nextToken()):this.finishOp(R.incDec,2):61===t?this.finishOp(R.assign,2):this.finishOp(R.plusMin,1)},e.prototype.readToken_lt_gt=function(e){var t=this.input.charCodeAt(this.state.pos+1),r=1;return t===e?(r=62===e&&62===this.input.charCodeAt(this.state.pos+2)?3:2,61===this.input.charCodeAt(this.state.pos+r)?this.finishOp(R.assign,r+1):this.finishOp(R.bitShift,r)):33===t&&60===e&&45===this.input.charCodeAt(this.state.pos+2)&&45===this.input.charCodeAt(this.state.pos+3)?(this.inModule&&this.unexpected(),this.skipLineComment(4),this.skipSpace(),this.nextToken()):(61===t&&(r=2),this.finishOp(R.relational,r))},e.prototype.readToken_eq_excl=function(e){var t=this.input.charCodeAt(this.state.pos+1);return 61===t?this.finishOp(R.equality,61===this.input.charCodeAt(this.state.pos+2)?3:2):61===e&&62===t?(this.state.pos+=2,this.finishToken(R.arrow)):this.finishOp(61===e?R.eq:R.prefix,1)},e.prototype.getTokenFromCode=function(e){switch(e){case 46:return this.readToken_dot();case 40:return++this.state.pos,this.finishToken(R.parenL);case 41:return++this.state.pos,this.finishToken(R.parenR);case 59:return++this.state.pos,this.finishToken(R.semi);case 44:return++this.state.pos,this.finishToken(R.comma);case 91:return++this.state.pos,this.finishToken(R.bracketL);case 93:return++this.state.pos,this.finishToken(R.bracketR);case 123:return this.hasPlugin("flow")&&124===this.input.charCodeAt(this.state.pos+1)?this.finishOp(R.braceBarL,2):(++this.state.pos,this.finishToken(R.braceL));case 125:return++this.state.pos,this.finishToken(R.braceR);case 58:return this.hasPlugin("functionBind")&&58===this.input.charCodeAt(this.state.pos+1)?this.finishOp(R.doubleColon,2):(++this.state.pos,this.finishToken(R.colon));case 63:return++this.state.pos,this.finishToken(R.question);case 64:return++this.state.pos,this.finishToken(R.at);case 96:return++this.state.pos,this.finishToken(R.backQuote);case 48:var t=this.input.charCodeAt(this.state.pos+1);if(120===t||88===t)return this.readRadixNumber(16);if(111===t||79===t)return this.readRadixNumber(8);if(98===t||66===t)return this.readRadixNumber(2);case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:return this.readNumber(!1);case 34:case 39:return this.readString(e);case 47:return this.readToken_slash();case 37:case 42:return this.readToken_mult_modulo(e);case 124:case 38:return this.readToken_pipe_amp(e);case 94:return this.readToken_caret();case 43:case 45:return this.readToken_plus_min(e);case 60:case 62:return this.readToken_lt_gt(e);case 61:case 33:return this.readToken_eq_excl(e);case 126:return this.finishOp(R.prefix,1)}this.raise(this.state.pos,"Unexpected character '"+l(e)+"'")},e.prototype.finishOp=function(e,t){var r=this.input.slice(this.state.pos,this.state.pos+t);return this.state.pos+=t,this.finishToken(e,r)},e.prototype.readRegexp=function(){for(var e=this.state.pos,t=void 0,r=void 0;;){this.state.pos>=this.input.length&&this.raise(e,"Unterminated regular expression");var n=this.input.charAt(this.state.pos);if(M.test(n)&&this.raise(e,"Unterminated regular expression"),t)t=!1;else{if("["===n)r=!0;else if("]"===n&&r)r=!1;else if("/"===n&&!r)break;t="\\"===n}++this.state.pos}var i=this.input.slice(e,this.state.pos);++this.state.pos;var s=this.readWord1();if(s){/^[gmsiyu]*$/.test(s)||this.raise(e,"Invalid regular expression flag")}return this.finishToken(R.regexp,{pattern:i,flags:s})},e.prototype.readInt=function(e,t){for(var r=this.state.pos,n=0,i=0,s=null==t?1/0:t;i=97?a-97+10:a>=65?a-65+10:a>=48&&a<=57?a-48:1/0)>=e)break;++this.state.pos,n=n*e+o}return this.state.pos===r||null!=t&&this.state.pos-r!==t?null:n},e.prototype.readRadixNumber=function(e){this.state.pos+=2;var t=this.readInt(e);return null==t&&this.raise(this.state.start+2,"Expected number in radix "+e),i(this.fullCharCodeAtPos())&&this.raise(this.state.pos,"Identifier directly after number"),this.finishToken(R.num,t)},e.prototype.readNumber=function(e){var t=this.state.pos,r=48===this.input.charCodeAt(t),n=!1;e||null!==this.readInt(10)||this.raise(t,"Invalid number"),r&&this.state.pos==t+1&&(r=!1);var s=this.input.charCodeAt(this.state.pos);46!==s||r||(++this.state.pos,this.readInt(10),n=!0,s=this.input.charCodeAt(this.state.pos)),69!==s&&101!==s||r||(s=this.input.charCodeAt(++this.state.pos),43!==s&&45!==s||++this.state.pos,null===this.readInt(10)&&this.raise(t,"Invalid number"),n=!0),i(this.fullCharCodeAtPos())&&this.raise(this.state.pos,"Identifier directly after number");var a=this.input.slice(t,this.state.pos),o=void 0;return n?o=parseFloat(a):r&&1!==a.length?this.state.strict?this.raise(t,"Invalid number"):o=/[89]/.test(a)?parseInt(a,10):parseInt(a,8):o=parseInt(a,10),this.finishToken(R.num,o)},e.prototype.readCodePoint=function(e){var t=this.input.charCodeAt(this.state.pos),r=void 0;if(123===t){var n=++this.state.pos;if(r=this.readHexChar(this.input.indexOf("}",this.state.pos)-this.state.pos,e),++this.state.pos,null===r)--this.state.invalidTemplateEscapePosition;else if(r>1114111){if(!e)return this.state.invalidTemplateEscapePosition=n-2,null;this.raise(n,"Code point out of bounds")}}else r=this.readHexChar(4,e);return r},e.prototype.readString=function(e){for(var t="",r=++this.state.pos;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated string constant");var n=this.input.charCodeAt(this.state.pos);if(n===e)break;92===n?(t+=this.input.slice(r,this.state.pos),t+=this.readEscapedChar(!1),r=this.state.pos):(o(n)&&this.raise(this.state.start,"Unterminated string constant"),++this.state.pos)}return t+=this.input.slice(r,this.state.pos++),this.finishToken(R.string,t)},e.prototype.readTmplToken=function(){for(var e="",t=this.state.pos,r=!1;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated template");var n=this.input.charCodeAt(this.state.pos);if(96===n||36===n&&123===this.input.charCodeAt(this.state.pos+1))return this.state.pos===this.state.start&&this.match(R.template)?36===n?(this.state.pos+=2,this.finishToken(R.dollarBraceL)):(++this.state.pos,this.finishToken(R.backQuote)):(e+=this.input.slice(t,this.state.pos),this.finishToken(R.template,r?null:e));if(92===n){e+=this.input.slice(t,this.state.pos);var i=this.readEscapedChar(!0);null===i?r=!0:e+=i,t=this.state.pos}else if(o(n)){switch(e+=this.input.slice(t,this.state.pos),++this.state.pos,n){case 13:10===this.input.charCodeAt(this.state.pos)&&++this.state.pos;case 10:e+="\n";break;default:e+=String.fromCharCode(n)}++this.state.curLine,this.state.lineStart=this.state.pos,t=this.state.pos}else++this.state.pos}},e.prototype.readEscapedChar=function(e){var t=!e,r=this.input.charCodeAt(++this.state.pos);switch(++this.state.pos,r){case 110:return"\n";case 114:return"\r";case 120:var n=this.readHexChar(2,t);return null===n?null:String.fromCharCode(n);case 117:var i=this.readCodePoint(t);return null===i?null:l(i);case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 13:10===this.input.charCodeAt(this.state.pos)&&++this.state.pos;case 10:return this.state.lineStart=this.state.pos,++this.state.curLine,"";default:if(r>=48&&r<=55){var s=this.state.pos-1,a=this.input.substr(this.state.pos-1,3).match(/^[0-7]+/)[0],o=parseInt(a,8);if(o>255&&(a=a.slice(0,-1),o=parseInt(a,8)),o>0){if(e)return this.state.invalidTemplateEscapePosition=s,null;this.state.strict?this.raise(s,"Octal literal in strict mode"):this.state.containsOctal||(this.state.containsOctal=!0,this.state.octalPosition=s)}return this.state.pos+=a.length-1,String.fromCharCode(o)}return String.fromCharCode(r)}},e.prototype.readHexChar=function(e,t){var r=this.state.pos,n=this.readInt(16,e);return null===n&&(t?this.raise(r,"Bad character escape sequence"):(this.state.pos=r-1,this.state.invalidTemplateEscapePosition=r-1)),n},e.prototype.readWord1=function(){this.state.containsEsc=!1;for(var e="",t=!0,r=this.state.pos;this.state.pos-1)||!!this.plugins[e]},t.prototype.extend=function(e,t){this[e]=t(this[e])},t.prototype.loadAllPlugins=function(){var e=this,t=Object.keys(K).filter(function(e){return"flow"!==e&&"estree"!==e});t.push("flow"),t.forEach(function(t){var r=K[t];r&&r(e)})},t.prototype.loadPlugins=function(e){if(e.indexOf("*")>=0)return this.loadAllPlugins(),{"*":!0};var t={};e.indexOf("flow")>=0&&(e=e.filter(function(e){return"flow"!==e}),e.push("flow")),e.indexOf("estree")>=0&&(e=e.filter(function(e){return"estree"!==e}),e.unshift("estree"));for(var r=e,n=Array.isArray(r),i=0,r=n?r:r[Symbol.iterator]();;){var s;if(n){if(i>=r.length)break;s=r[i++]}else{if(i=r.next(),i.done)break;s=i.value}var a=s;if(!t[a]){t[a]=!0;var o=K[a];o&&o(this)}}return t},t.prototype.parse=function(){var e=this.startNode(),t=this.startNode();return this.nextToken(),this.parseTopLevel(e,t)},t}(q),X=J.prototype;X.addExtra=function(e,t,r){if(e){(e.extra=e.extra||{})[t]=r}},X.isRelational=function(e){return this.match(R.relational)&&this.state.value===e},X.expectRelational=function(e){this.isRelational(e)?this.next():this.unexpected(null,R.relational)},X.isContextual=function(e){return this.match(R.name)&&this.state.value===e},X.eatContextual=function(e){return this.state.value===e&&this.eat(R.name)},X.expectContextual=function(e,t){this.eatContextual(e)||this.unexpected(null,t)},X.canInsertSemicolon=function(){return this.match(R.eof)||this.match(R.braceR)||M.test(this.input.slice(this.state.lastTokEnd,this.state.start))},X.isLineTerminator=function(){return this.eat(R.semi)||this.canInsertSemicolon()},X.semicolon=function(){this.isLineTerminator()||this.unexpected(null,R.semi)},X.expect=function(e,t){return this.eat(e)||this.unexpected(t,e)},X.unexpected=function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"Unexpected token";t&&"object"===(void 0===t?"undefined":C(t))&&t.label&&(t="Unexpected token, expected "+t.label),this.raise(null!=e?e:this.state.start,t)};var z=J.prototype;z.parseTopLevel=function(e,t){return t.sourceType=this.options.sourceType,this.parseBlockBody(t,!0,!0,R.eof),e.program=this.finishNode(t,"Program"),e.comments=this.state.comments,e.tokens=this.state.tokens,this.finishNode(e,"File")};var $={kind:"loop"},Q={kind:"switch"};z.stmtToDirective=function(e){var t=e.expression,r=this.startNodeAt(t.start,t.loc.start),n=this.startNodeAt(e.start,e.loc.start),i=this.input.slice(t.start,t.end),s=r.value=i.slice(1,-1);return this.addExtra(r,"raw",i),this.addExtra(r,"rawValue",s),n.value=this.finishNodeAt(r,"DirectiveLiteral",t.end,t.loc.end),this.finishNodeAt(n,"Directive",e.end,e.loc.end)},z.parseStatement=function(e,t){this.match(R.at)&&this.parseDecorators(!0);var r=this.state.type,n=this.startNode();switch(r){case R._break:case 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a=e.elements,o=Array.isArray(a),u=0,a=o?a:a[Symbol.iterator]();;){var l;if(o){if(u>=a.length)break;l=a[u++]}else{if(u=a.next(),u.done)break;l=u.value}var c=l;c&&this.checkDeclaration(c)}else"ObjectProperty"===e.type?this.checkDeclaration(e.value):"RestElement"===e.type||"RestProperty"===e.type?this.checkDeclaration(e.argument):"Identifier"===e.type&&this.checkDuplicateExports(e,e.name)},z.checkDuplicateExports=function(e,t){this.state.exportedIdentifiers.indexOf(t)>-1&&this.raiseDuplicateExportError(e,t),this.state.exportedIdentifiers.push(t)},z.raiseDuplicateExportError=function(e,t){this.raise(e.start,"default"===t?"Only one default export allowed per module.":"`"+t+"` has already been exported. 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a;if(i){if(s>=n.length)break;a=n[s++]}else{if(s=n.next(),s.done)break;a=s.value}var o=a;"ObjectMethod"===o.type?"get"===o.kind||"set"===o.kind?this.raise(o.key.start,"Object pattern can't contain getter or setter"):this.raise(o.key.start,"Object pattern can't contain methods"):this.toAssignable(o,t,"object destructuring pattern")}break;case"ObjectProperty":this.toAssignable(e.value,t,r);break;case"SpreadProperty":e.type="RestProperty";var u=e.argument;this.toAssignable(u,t,r);break;case"ArrayExpression":e.type="ArrayPattern",this.toAssignableList(e.elements,t,r);break;case"AssignmentExpression":"="===e.operator?(e.type="AssignmentPattern",delete e.operator):this.raise(e.left.end,"Only '=' operator can be used for specifying default value.");break;case"MemberExpression":if(!t)break;default:var l="Invalid left-hand side"+(r?" in "+r:"expression");this.raise(e.start,l)}return e},ee.toAssignableList=function(e,t,r){var n=e.length;if(n){var i=e[n-1];if(i&&"RestElement"===i.type)--n;else 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te=J.prototype;te.checkPropClash=function(e,t){if(!e.computed&&!e.kind){var r=e.key;"__proto__"===("Identifier"===r.type?r.name:String(r.value))&&(t.proto&&this.raise(r.start,"Redefinition of __proto__ property"),t.proto=!0)}},te.getExpression=function(){this.nextToken();var e=this.parseExpression();return this.match(R.eof)||this.unexpected(),e},te.parseExpression=function(e,t){var r=this.state.start,n=this.state.startLoc,i=this.parseMaybeAssign(e,t);if(this.match(R.comma)){var s=this.startNodeAt(r,n);for(s.expressions=[i];this.eat(R.comma);)s.expressions.push(this.parseMaybeAssign(e,t));return this.toReferencedList(s.expressions),this.finishNode(s,"SequenceExpression")}return i},te.parseMaybeAssign=function(e,t,r,n){var i=this.state.start,s=this.state.startLoc;if(this.match(R._yield)&&this.state.inGenerator){var a=this.parseYield();return r&&(a=r.call(this,a,i,s)),a}var o=void 0;t?o=!1:(t={start:0},o=!0),(this.match(R.parenL)||this.match(R.name))&&(this.state.potentialArrowAt=this.state.start);var u=this.parseMaybeConditional(e,t,n);if(r&&(u=r.call(this,u,i,s)),this.state.type.isAssign){var l=this.startNodeAt(i,s);if(l.operator=this.state.value,l.left=this.match(R.eq)?this.toAssignable(u,void 0,"assignment expression"):u,t.start=0,this.checkLVal(u,void 0,void 0,"assignment expression"),u.extra&&u.extra.parenthesized){var c=void 0;"ObjectPattern"===u.type?c="`({a}) = 0` use `({a} = 0)`":"ArrayPattern"===u.type&&(c="`([a]) = 0` use `([a] = 0)`"),c&&this.raise(u.start,"You're trying to assign to a parenthesized expression, eg. instead of "+c)}return this.next(),l.right=this.parseMaybeAssign(e),this.finishNode(l,"AssignmentExpression")}return o&&t.start&&this.unexpected(t.start),u},te.parseMaybeConditional=function(e,t,r){var n=this.state.start,i=this.state.startLoc,s=this.parseExprOps(e,t);return t&&t.start?s:this.parseConditional(s,e,n,i,r)},te.parseConditional=function(e,t,r,n){if(this.eat(R.question)){var i=this.startNodeAt(r,n);return i.test=e,i.consequent=this.parseMaybeAssign(),this.expect(R.colon),i.alternate=this.parseMaybeAssign(t),this.finishNode(i,"ConditionalExpression")}return e},te.parseExprOps=function(e,t){var r=this.state.start,n=this.state.startLoc,i=this.parseMaybeUnary(t);return t&&t.start?i:this.parseExprOp(i,r,n,-1,e)},te.parseExprOp=function(e,t,r,n,i){var s=this.state.type.binop;if(!(null==s||i&&this.match(R._in))&&s>n){var a=this.startNodeAt(t,r);a.left=e,a.operator=this.state.value,"**"!==a.operator||"UnaryExpression"!==e.type||!e.extra||e.extra.parenthesizedArgument||e.extra.parenthesized||this.raise(e.argument.start,"Illegal expression. Wrap left hand side or entire exponentiation in parentheses.");var o=this.state.type;this.next();var u=this.state.start,l=this.state.startLoc;return a.right=this.parseExprOp(this.parseMaybeUnary(),u,l,o.rightAssociative?s-1:s,i),this.finishNode(a,o===R.logicalOR||o===R.logicalAND?"LogicalExpression":"BinaryExpression"),this.parseExprOp(a,t,r,n,i)}return e},te.parseMaybeUnary=function(e){if(this.state.type.prefix){var t=this.startNode(),r=this.match(R.incDec);t.operator=this.state.value,t.prefix=!0,this.next();var n=this.state.type;return t.argument=this.parseMaybeUnary(),this.addExtra(t,"parenthesizedArgument",!(n!==R.parenL||t.argument.extra&&t.argument.extra.parenthesized)),e&&e.start&&this.unexpected(e.start),r?this.checkLVal(t.argument,void 0,void 0,"prefix operation"):this.state.strict&&"delete"===t.operator&&"Identifier"===t.argument.type&&this.raise(t.start,"Deleting local variable in strict mode"),this.finishNode(t,r?"UpdateExpression":"UnaryExpression")}var i=this.state.start,s=this.state.startLoc,a=this.parseExprSubscripts(e);if(e&&e.start)return a;for(;this.state.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(i,s);o.operator=this.state.value,o.prefix=!1,o.argument=a,this.checkLVal(a,void 0,void 0,"postfix operation"),this.next(),a=this.finishNode(o,"UpdateExpression")}return a},te.parseExprSubscripts=function(e){var t=this.state.start,r=this.state.startLoc,n=this.state.potentialArrowAt,i=this.parseExprAtom(e);return"ArrowFunctionExpression"===i.type&&i.start===n?i:e&&e.start?i:this.parseSubscripts(i,t,r)},te.parseSubscripts=function(e,t,r,n){for(;;){if(!n&&this.eat(R.doubleColon)){var i=this.startNodeAt(t,r);return i.object=e,i.callee=this.parseNoCallExpr(),this.parseSubscripts(this.finishNode(i,"BindExpression"),t,r,n)}if(this.eat(R.dot)){var s=this.startNodeAt(t,r);s.object=e,s.property=this.parseIdentifier(!0),s.computed=!1,e=this.finishNode(s,"MemberExpression")}else if(this.eat(R.bracketL)){var a=this.startNodeAt(t,r);a.object=e,a.property=this.parseExpression(),a.computed=!0,this.expect(R.bracketR),e=this.finishNode(a,"MemberExpression")}else if(!n&&this.match(R.parenL)){var o=this.state.potentialArrowAt===e.start&&"Identifier"===e.type&&"async"===e.name&&!this.canInsertSemicolon();this.next();var u=this.startNodeAt(t,r);if(u.callee=e,u.arguments=this.parseCallExpressionArguments(R.parenR,o),"Import"===u.callee.type&&1!==u.arguments.length&&this.raise(u.start,"import() requires exactly one argument"),e=this.finishNode(u,"CallExpression"),o&&this.shouldParseAsyncArrow())return this.parseAsyncArrowFromCallExpression(this.startNodeAt(t,r),u);this.toReferencedList(u.arguments)}else{if(!this.match(R.backQuote))return e;var l=this.startNodeAt(t,r);l.tag=e,l.quasi=this.parseTemplate(!0),e=this.finishNode(l,"TaggedTemplateExpression")}}},te.parseCallExpressionArguments=function(e,t){for(var r=[],n=void 0,i=!0;!this.eat(e);){if(i)i=!1;else if(this.expect(R.comma),this.eat(e))break;this.match(R.parenL)&&!n&&(n=this.state.start),r.push(this.parseExprListItem(!1,t?{start:0}:void 0,t?{start:0}:void 0))}return t&&n&&this.shouldParseAsyncArrow()&&this.unexpected(),r},te.shouldParseAsyncArrow=function(){return this.match(R.arrow)},te.parseAsyncArrowFromCallExpression=function(e,t){return this.expect(R.arrow),this.parseArrowExpression(e,t.arguments,!0)},te.parseNoCallExpr=function(){var e=this.state.start,t=this.state.startLoc;return this.parseSubscripts(this.parseExprAtom(),e,t,!0)},te.parseExprAtom=function(e){var t=this.state.potentialArrowAt===this.state.start,r=void 0;switch(this.state.type){case R._super:return this.state.inMethod||this.state.inClassProperty||this.options.allowSuperOutsideMethod||this.raise(this.state.start,"'super' outside of function or class"),r=this.startNode(),this.next(),this.match(R.parenL)||this.match(R.bracketL)||this.match(R.dot)||this.unexpected(),this.match(R.parenL)&&"constructor"!==this.state.inMethod&&!this.options.allowSuperOutsideMethod&&this.raise(r.start,"super() outside of class constructor"),this.finishNode(r,"Super");case R._import:return this.hasPlugin("dynamicImport")||this.unexpected(),r=this.startNode(),this.next(),this.match(R.parenL)||this.unexpected(null,R.parenL),this.finishNode(r,"Import");case R._this:return r=this.startNode(),this.next(),this.finishNode(r,"ThisExpression");case R._yield:this.state.inGenerator&&this.unexpected();case R.name:r=this.startNode();var n="await"===this.state.value&&this.state.inAsync,i=this.shouldAllowYieldIdentifier(),s=this.parseIdentifier(n||i);if("await"===s.name){if(this.state.inAsync||this.inModule)return this.parseAwait(r)}else{if("async"===s.name&&this.match(R._function)&&!this.canInsertSemicolon())return this.next(),this.parseFunction(r,!1,!1,!0);if(t&&"async"===s.name&&this.match(R.name)){var a=[this.parseIdentifier()];return this.expect(R.arrow),this.parseArrowExpression(r,a,!0)}}return t&&!this.canInsertSemicolon()&&this.eat(R.arrow)?this.parseArrowExpression(r,[s]):s;case R._do:if(this.hasPlugin("doExpressions")){var o=this.startNode();this.next();var u=this.state.inFunction,l=this.state.labels;return this.state.labels=[],this.state.inFunction=!1,o.body=this.parseBlock(!1,!0),this.state.inFunction=u,this.state.labels=l,this.finishNode(o,"DoExpression")}case R.regexp:var c=this.state.value;return r=this.parseLiteral(c.value,"RegExpLiteral"),r.pattern=c.pattern,r.flags=c.flags,r;case R.num:return this.parseLiteral(this.state.value,"NumericLiteral");case R.string:return this.parseLiteral(this.state.value,"StringLiteral");case R._null:return r=this.startNode(),this.next(),this.finishNode(r,"NullLiteral");case R._true:case R._false:return r=this.startNode(),r.value=this.match(R._true),this.next(),this.finishNode(r,"BooleanLiteral");case R.parenL:return this.parseParenAndDistinguishExpression(null,null,t);case R.bracketL:return r=this.startNode(),this.next(),r.elements=this.parseExprList(R.bracketR,!0,e),this.toReferencedList(r.elements),this.finishNode(r,"ArrayExpression");case R.braceL:return this.parseObj(!1,e);case R._function:return this.parseFunctionExpression();case R.at:this.parseDecorators();case R._class:return r=this.startNode(),this.takeDecorators(r),this.parseClass(r,!1);case R._new:return this.parseNew();case R.backQuote:return this.parseTemplate(!1);case R.doubleColon:r=this.startNode(),this.next(),r.object=null;var f=r.callee=this.parseNoCallExpr();if("MemberExpression"===f.type)return this.finishNode(r,"BindExpression");this.raise(f.start,"Binding should be performed on object property.");default:this.unexpected()}},te.parseFunctionExpression=function(){var e=this.startNode(),t=this.parseIdentifier(!0);return this.state.inGenerator&&this.eat(R.dot)&&this.hasPlugin("functionSent")?this.parseMetaProperty(e,t,"sent"):this.parseFunction(e,!1)},te.parseMetaProperty=function(e,t,r){return e.meta=t,e.property=this.parseIdentifier(!0),e.property.name!==r&&this.raise(e.property.start,"The only valid meta property for new is "+t.name+"."+r),this.finishNode(e,"MetaProperty")},te.parseLiteral=function(e,t,r,n){r=r||this.state.start,n=n||this.state.startLoc;var i=this.startNodeAt(r,n);return this.addExtra(i,"rawValue",e),this.addExtra(i,"raw",this.input.slice(r,this.state.end)),i.value=e,this.next(),this.finishNode(i,t)},te.parseParenExpression=function(){this.expect(R.parenL);var e=this.parseExpression();return this.expect(R.parenR),e},te.parseParenAndDistinguishExpression=function(e,t,r){e=e||this.state.start,t=t||this.state.startLoc;var n=void 0;this.expect(R.parenL);for(var i=this.state.start,s=this.state.startLoc,a=[],o={start:0},u={start:0},l=!0,c=void 0,f=void 0;!this.match(R.parenR);){if(l)l=!1;else if(this.expect(R.comma,u.start||null),this.match(R.parenR)){f=this.state.start;break} -if(this.match(R.ellipsis)){var p=this.state.start,d=this.state.startLoc;c=this.state.start,a.push(this.parseParenItem(this.parseRest(),p,d));break}a.push(this.parseMaybeAssign(!1,o,this.parseParenItem,u))}var h=this.state.start,m=this.state.startLoc;this.expect(R.parenR);var y=this.startNodeAt(e,t);if(r&&this.shouldParseArrow()&&(y=this.parseArrow(y))){for(var v=a,g=Array.isArray(v),b=0,v=g?v:v[Symbol.iterator]();;){var E;if(g){if(b>=v.length)break;E=v[b++]}else{if(b=v.next(),b.done)break;E=b.value}var x=E;x.extra&&x.extra.parenthesized&&this.unexpected(x.extra.parenStart)}return this.parseArrowExpression(y,a)}return a.length||this.unexpected(this.state.lastTokStart),f&&this.unexpected(f),c&&this.unexpected(c),o.start&&this.unexpected(o.start),u.start&&this.unexpected(u.start),a.length>1?(n=this.startNodeAt(i,s),n.expressions=a,this.toReferencedList(n.expressions),this.finishNodeAt(n,"SequenceExpression",h,m)):n=a[0],this.addExtra(n,"parenthesized",!0),this.addExtra(n,"parenStart",e),n},te.shouldParseArrow=function(){return!this.canInsertSemicolon()},te.parseArrow=function(e){if(this.eat(R.arrow))return e},te.parseParenItem=function(e){return e},te.parseNew=function(){var e=this.startNode(),t=this.parseIdentifier(!0);if(this.eat(R.dot)){var r=this.parseMetaProperty(e,t,"target");return this.state.inFunction||this.raise(r.property.start,"new.target can only be used in functions"),r}return e.callee=this.parseNoCallExpr(),this.eat(R.parenL)?(e.arguments=this.parseExprList(R.parenR),this.toReferencedList(e.arguments)):e.arguments=[],this.finishNode(e,"NewExpression")},te.parseTemplateElement=function(e){var t=this.startNode();return null===this.state.value&&(e&&this.hasPlugin("templateInvalidEscapes")?this.state.invalidTemplateEscapePosition=null:this.raise(this.state.invalidTemplateEscapePosition,"Invalid escape sequence in template")),t.value={raw:this.input.slice(this.state.start,this.state.end).replace(/\r\n?/g,"\n"),cooked:this.state.value},this.next(),t.tail=this.match(R.backQuote),this.finishNode(t,"TemplateElement")},te.parseTemplate=function(e){var t=this.startNode();this.next(),t.expressions=[];var r=this.parseTemplateElement(e);for(t.quasis=[r];!r.tail;)this.expect(R.dollarBraceL),t.expressions.push(this.parseExpression()),this.expect(R.braceR),t.quasis.push(r=this.parseTemplateElement(e));return this.next(),this.finishNode(t,"TemplateLiteral")},te.parseObj=function(e,t){var r=[],n=Object.create(null),i=!0,s=this.startNode();s.properties=[],this.next();for(var a=null;!this.eat(R.braceR);){if(i)i=!1;else if(this.expect(R.comma),this.eat(R.braceR))break;for(;this.match(R.at);)r.push(this.parseDecorator());var o=this.startNode(),u=!1,l=!1,c=void 0,f=void 0;if(r.length&&(o.decorators=r,r=[]),this.hasPlugin("objectRestSpread")&&this.match(R.ellipsis)){if(o=this.parseSpread(e?{start:0}:void 0),o.type=e?"RestProperty":"SpreadProperty",e&&this.toAssignable(o.argument,!0,"object pattern"),s.properties.push(o),!e)continue;var p=this.state.start;if(null===a){if(this.eat(R.braceR))break;if(this.match(R.comma)&&this.lookahead().type===R.braceR)continue;a=p;continue}this.unexpected(a,"Cannot have multiple rest elements when destructuring")}if(o.method=!1,o.shorthand=!1,(e||t)&&(c=this.state.start,f=this.state.startLoc),e||(u=this.eat(R.star)),!e&&this.isContextual("async")){u&&this.unexpected();var d=this.parseIdentifier();this.match(R.colon)||this.match(R.parenL)||this.match(R.braceR)||this.match(R.eq)||this.match(R.comma)?(o.key=d,o.computed=!1):(l=!0,this.hasPlugin("asyncGenerators")&&(u=this.eat(R.star)),this.parsePropertyName(o))}else this.parsePropertyName(o);this.parseObjPropValue(o,c,f,u,l,e,t),this.checkPropClash(o,n),o.shorthand&&this.addExtra(o,"shorthand",!0),s.properties.push(o)}return null!==a&&this.unexpected(a,"The rest element has to be the last element when destructuring"),r.length&&this.raise(this.state.start,"You have trailing decorators with no property"),this.finishNode(s,e?"ObjectPattern":"ObjectExpression")},te.isGetterOrSetterMethod=function(e,t){return!t&&!e.computed&&"Identifier"===e.key.type&&("get"===e.key.name||"set"===e.key.name)&&(this.match(R.string)||this.match(R.num)||this.match(R.bracketL)||this.match(R.name)||this.state.type.keyword)},te.checkGetterSetterParamCount=function(e){var t="get"===e.kind?0:1;if(e.params.length!==t){var r=e.start;"get"===e.kind?this.raise(r,"getter should have no params"):this.raise(r,"setter should have exactly one param")}},te.parseObjectMethod=function(e,t,r,n){return r||t||this.match(R.parenL)?(n&&this.unexpected(),e.kind="method",e.method=!0,this.parseMethod(e,t,r),this.finishNode(e,"ObjectMethod")):this.isGetterOrSetterMethod(e,n)?((t||r)&&this.unexpected(),e.kind=e.key.name,this.parsePropertyName(e),this.parseMethod(e),this.checkGetterSetterParamCount(e),this.finishNode(e,"ObjectMethod")):void 0},te.parseObjectProperty=function(e,t,r,n,i){return this.eat(R.colon)?(e.value=n?this.parseMaybeDefault(this.state.start,this.state.startLoc):this.parseMaybeAssign(!1,i),this.finishNode(e,"ObjectProperty")):e.computed||"Identifier"!==e.key.type?void 0:(this.checkReservedWord(e.key.name,e.key.start,!0,!0),n?e.value=this.parseMaybeDefault(t,r,e.key.__clone()):this.match(R.eq)&&i?(i.start||(i.start=this.state.start),e.value=this.parseMaybeDefault(t,r,e.key.__clone())):e.value=e.key.__clone(),e.shorthand=!0,this.finishNode(e,"ObjectProperty"))},te.parseObjPropValue=function(e,t,r,n,i,s,a){var o=this.parseObjectMethod(e,n,i,s)||this.parseObjectProperty(e,t,r,s,a);return o||this.unexpected(),o},te.parsePropertyName=function(e){if(this.eat(R.bracketL))e.computed=!0,e.key=this.parseMaybeAssign(),this.expect(R.bracketR);else{e.computed=!1;var t=this.state.inPropertyName;this.state.inPropertyName=!0,e.key=this.match(R.num)||this.match(R.string)?this.parseExprAtom():this.parseIdentifier(!0),this.state.inPropertyName=t}return e.key},te.initFunction=function(e,t){e.id=null,e.generator=!1,e.expression=!1,e.async=!!t},te.parseMethod=function(e,t,r){var n=this.state.inMethod;return this.state.inMethod=e.kind||!0,this.initFunction(e,r),this.expect(R.parenL),e.params=this.parseBindingList(R.parenR),e.generator=!!t,this.parseFunctionBody(e),this.state.inMethod=n,e},te.parseArrowExpression=function(e,t,r){return this.initFunction(e,r),e.params=this.toAssignableList(t,!0,"arrow function parameters"),this.parseFunctionBody(e,!0),this.finishNode(e,"ArrowFunctionExpression")},te.isStrictBody=function(e,t){if(!t&&e.body.directives.length)for(var r=e.body.directives,n=Array.isArray(r),i=0,r=n?r:r[Symbol.iterator]();;){var s;if(n){if(i>=r.length)break;s=r[i++]}else{if(i=r.next(),i.done)break;s=i.value}var a=s;if("use strict"===a.value.value)return!0}return!1},te.parseFunctionBody=function(e,t){var r=t&&!this.match(R.braceL),n=this.state.inAsync;if(this.state.inAsync=e.async,r)e.body=this.parseMaybeAssign(),e.expression=!0;else{var i=this.state.inFunction,s=this.state.inGenerator,a=this.state.labels;this.state.inFunction=!0,this.state.inGenerator=e.generator,this.state.labels=[],e.body=this.parseBlock(!0),e.expression=!1,this.state.inFunction=i,this.state.inGenerator=s,this.state.labels=a}this.state.inAsync=n;var o=this.isStrictBody(e,r),u=this.state.strict||t||o;if(o&&e.id&&"Identifier"===e.id.type&&"yield"===e.id.name&&this.raise(e.id.start,"Binding yield in strict mode"),u){var l=Object.create(null),c=this.state.strict;o&&(this.state.strict=!0),e.id&&this.checkLVal(e.id,!0,void 0,"function name");for(var f=e.params,p=Array.isArray(f),d=0,f=p?f:f[Symbol.iterator]();;){var h;if(p){if(d>=f.length)break;h=f[d++]}else{if(d=f.next(),d.done)break;h=d.value}var m=h;o&&"Identifier"!==m.type&&this.raise(m.start,"Non-simple parameter in strict mode"),this.checkLVal(m,!0,l,"function parameter list")}this.state.strict=c}},te.parseExprList=function(e,t,r){for(var n=[],i=!0;!this.eat(e);){if(i)i=!1;else if(this.expect(R.comma),this.eat(e))break;n.push(this.parseExprListItem(t,r))}return n},te.parseExprListItem=function(e,t,r){return e&&this.match(R.comma)?null:this.match(R.ellipsis)?this.parseSpread(t):this.parseMaybeAssign(!1,t,this.parseParenItem,r)},te.parseIdentifier=function(e){var t=this.startNode();return e||this.checkReservedWord(this.state.value,this.state.start,!!this.state.type.keyword,!1),this.match(R.name)?t.name=this.state.value:this.state.type.keyword?t.name=this.state.type.keyword:this.unexpected(),!e&&"await"===t.name&&this.state.inAsync&&this.raise(t.start,"invalid use of await inside of an async function"),t.loc.identifierName=t.name,this.next(),this.finishNode(t,"Identifier")},te.checkReservedWord=function(e,t,r,n){(this.isReservedWord(e)||r&&this.isKeyword(e))&&this.raise(t,e+" is a reserved word"),this.state.strict&&(v.strict(e)||n&&v.strictBind(e))&&this.raise(t,e+" is a reserved word in strict mode")},te.parseAwait=function(e){return this.state.inAsync||this.unexpected(),this.match(R.star)&&this.raise(e.start,"await* has been removed from the async functions proposal. Use Promise.all() instead."),e.argument=this.parseMaybeUnary(),this.finishNode(e,"AwaitExpression")},te.parseYield=function(){var e=this.startNode();return this.next(),this.match(R.semi)||this.canInsertSemicolon()||!this.match(R.star)&&!this.state.type.startsExpr?(e.delegate=!1,e.argument=null):(e.delegate=this.eat(R.star),e.argument=this.parseMaybeAssign()),this.finishNode(e,"YieldExpression")};var re=J.prototype,ne=["leadingComments","trailingComments","innerComments"],ie=function(){function e(t,r,n){w(this,e),this.type="",this.start=t,this.end=0,this.loc=new G(r),n&&(this.loc.filename=n)}return e.prototype.__clone=function(){var t=new e;for(var r in this)ne.indexOf(r)<0&&(t[r]=this[r]);return t},e}();re.startNode=function(){return new ie(this.state.start,this.state.startLoc,this.filename)},re.startNodeAt=function(e,t){return new ie(e,t,this.filename)},re.finishNode=function(e,t){return c.call(this,e,t,this.state.lastTokEnd,this.state.lastTokEndLoc)},re.finishNodeAt=function(e,t,r,n){return c.call(this,e,t,r,n)},J.prototype.raise=function(e,t){var r=u(this.input,e);t+=" ("+r.line+":"+r.column+")";var n=new SyntaxError(t);throw n.pos=e,n.loc=r,n};var se=J.prototype;se.addComment=function(e){this.filename&&(e.loc.filename=this.filename),this.state.trailingComments.push(e),this.state.leadingComments.push(e)},se.processComment=function(e){if(!("Program"===e.type&&e.body.length>0)){var t=this.state.commentStack,r=void 0,n=void 0,i=void 0,s=void 0,a=void 0;if(this.state.trailingComments.length>0)this.state.trailingComments[0].start>=e.end?(i=this.state.trailingComments,this.state.trailingComments=[]):this.state.trailingComments.length=0;else{var o=f(t);t.length>0&&o.trailingComments&&o.trailingComments[0].start>=e.end&&(i=o.trailingComments,o.trailingComments=null)}for(t.length>0&&f(t).start>=e.start&&(r=t.pop());t.length>0&&f(t).start>=e.start;)n=t.pop();if(!n&&r&&(n=r),r&&this.state.leadingComments.length>0){var u=f(this.state.leadingComments);if("ObjectProperty"===r.type){if(u.start>=e.start&&this.state.commentPreviousNode){for(a=0;a0&&(r.trailingComments=this.state.leadingComments,this.state.leadingComments=[])}}else if("CallExpression"===e.type&&e.arguments&&e.arguments.length){var l=f(e.arguments);l&&u.start>=l.start&&u.end<=e.end&&this.state.commentPreviousNode&&this.state.leadingComments.length>0&&(l.trailingComments=this.state.leadingComments,this.state.leadingComments=[])}}if(n){if(n.leadingComments)if(n!==e&&f(n.leadingComments).end<=e.start)e.leadingComments=n.leadingComments,n.leadingComments=null;else for(s=n.leadingComments.length-2;s>=0;--s)if(n.leadingComments[s].end<=e.start){e.leadingComments=n.leadingComments.splice(0,s+1);break}}else if(this.state.leadingComments.length>0)if(f(this.state.leadingComments).end<=e.start){if(this.state.commentPreviousNode)for(a=0;a0&&(e.leadingComments=this.state.leadingComments,this.state.leadingComments=[])}else{for(s=0;se.start);s++);e.leadingComments=this.state.leadingComments.slice(0,s),0===e.leadingComments.length&&(e.leadingComments=null),i=this.state.leadingComments.slice(s),0===i.length&&(i=null)}this.state.commentPreviousNode=e,i&&(i.length&&i[0].start>=e.start&&f(i).end<=e.end?e.innerComments=i:e.trailingComments=i),t.push(e)}};var ae=J.prototype;ae.estreeParseRegExpLiteral=function(e){var t=e.pattern,r=e.flags,n=null;try{n=new RegExp(t,r)}catch(e){}var i=this.estreeParseLiteral(n);return i.regex={pattern:t,flags:r},i},ae.estreeParseLiteral=function(e){return this.parseLiteral(e,"Literal")},ae.directiveToStmt=function(e){var t=e.value,r=this.startNodeAt(e.start,e.loc.start),n=this.startNodeAt(t.start,t.loc.start);return n.value=t.value,n.raw=t.extra.raw,r.expression=this.finishNodeAt(n,"Literal",t.end,t.loc.end),r.directive=t.extra.raw.slice(1,-1),this.finishNodeAt(r,"ExpressionStatement",e.end,e.loc.end)};var oe=function(e){e.extend("checkDeclaration",function(e){return function(t){p(t)?this.checkDeclaration(t.value):e.call(this,t)}}),e.extend("checkGetterSetterParamCount",function(){return function(e){var t="get"===e.kind?0:1;if(e.value.params.length!==t){var r=e.start;"get"===e.kind?this.raise(r,"getter should have no params"):this.raise(r,"setter should have exactly one param")}}}),e.extend("checkLVal",function(e){return function(t,r,n){var i=this;switch(t.type){case"ObjectPattern":t.properties.forEach(function(e){i.checkLVal("Property"===e.type?e.value:e,r,n,"object destructuring pattern")});break;default:for(var s=arguments.length,a=Array(s>3?s-3:0),o=3;o0)for(var r=e.body.body,n=Array.isArray(r),i=0,r=n?r:r[Symbol.iterator]();;){var s;if(n){if(i>=r.length)break;s=r[i++]}else{if(i=r.next(),i.done)break;s=i.value}var a=s;if("ExpressionStatement"!==a.type||"Literal"!==a.expression.type)break;if("use strict"===a.expression.value)return!0}return!1}}),e.extend("isValidDirective",function(){return function(e){return!("ExpressionStatement"!==e.type||"Literal"!==e.expression.type||"string"!=typeof e.expression.value||e.expression.extra&&e.expression.extra.parenthesized)}}),e.extend("stmtToDirective",function(e){return function(t){var r=e.call(this,t),n=t.expression.value;return r.value.value=n,r}}),e.extend("parseBlockBody",function(e){return function(t){for(var r=this,n=arguments.length,i=Array(n>1?n-1:0),s=1;s1?n-1:0),s=1;s2?n-2:0),s=2;s=a.length)break;l=a[u++]}else{if(u=a.next(),u.done)break;l=u.value}var c=l;"get"===c.kind||"set"===c.kind?this.raise(c.key.start,"Object pattern can't contain getter or setter"):c.method?this.raise(c.key.start,"Object pattern can't contain methods"):this.toAssignable(c,r,"object destructuring pattern")}return t}return e.call.apply(e,[this,t,r].concat(i))}})},ue=["any","mixed","empty","bool","boolean","number","string","void","null"],le=J.prototype;le.flowParseTypeInitialiser=function(e){var t=this.state.inType;this.state.inType=!0,this.expect(e||R.colon);var r=this.flowParseType();return this.state.inType=t,r},le.flowParsePredicate=function(){var e=this.startNode(),t=this.state.startLoc,r=this.state.start;this.expect(R.modulo);var n=this.state.startLoc;return this.expectContextual("checks"),t.line===n.line&&t.column===n.column-1||this.raise(r,"Spaces between ´%´ and ´checks´ are not allowed here."),this.eat(R.parenL)?(e.expression=this.parseExpression(),this.expect(R.parenR),this.finishNode(e,"DeclaredPredicate")):this.finishNode(e,"InferredPredicate")},le.flowParseTypeAndPredicateInitialiser=function(){var e=this.state.inType;this.state.inType=!0,this.expect(R.colon);var t=null,r=null;return this.match(R.modulo)?(this.state.inType=e,r=this.flowParsePredicate()):(t=this.flowParseType(),this.state.inType=e,this.match(R.modulo)&&(r=this.flowParsePredicate())),[t,r]},le.flowParseDeclareClass=function(e){return this.next(),this.flowParseInterfaceish(e,!0),this.finishNode(e,"DeclareClass")},le.flowParseDeclareFunction=function(e){this.next();var t=e.id=this.parseIdentifier(),r=this.startNode(),n=this.startNode();this.isRelational("<")?r.typeParameters=this.flowParseTypeParameterDeclaration():r.typeParameters=null,this.expect(R.parenL);var i=this.flowParseFunctionTypeParams();r.params=i.params,r.rest=i.rest,this.expect(R.parenR);var s=null,a=this.flowParseTypeAndPredicateInitialiser();return r.returnType=a[0],s=a[1],n.typeAnnotation=this.finishNode(r,"FunctionTypeAnnotation"),n.predicate=s,t.typeAnnotation=this.finishNode(n,"TypeAnnotation"),this.finishNode(t,t.type),this.semicolon(),this.finishNode(e,"DeclareFunction")},le.flowParseDeclare=function(e){return this.match(R._class)?this.flowParseDeclareClass(e):this.match(R._function)?this.flowParseDeclareFunction(e):this.match(R._var)?this.flowParseDeclareVariable(e):this.isContextual("module")?this.lookahead().type===R.dot?this.flowParseDeclareModuleExports(e):this.flowParseDeclareModule(e):this.isContextual("type")?this.flowParseDeclareTypeAlias(e):this.isContextual("opaque")?this.flowParseDeclareOpaqueType(e):this.isContextual("interface")?this.flowParseDeclareInterface(e):this.match(R._export)?this.flowParseDeclareExportDeclaration(e):void this.unexpected()},le.flowParseDeclareExportDeclaration=function(e){if(this.expect(R._export),this.isContextual("opaque"))return e.declaration=this.flowParseDeclare(this.startNode()),e.default=!1,this.finishNode(e,"DeclareExportDeclaration");throw this.unexpected()},le.flowParseDeclareVariable=function(e){return this.next(),e.id=this.flowParseTypeAnnotatableIdentifier(),this.semicolon(),this.finishNode(e,"DeclareVariable")},le.flowParseDeclareModule=function(e){this.next(),this.match(R.string)?e.id=this.parseExprAtom():e.id=this.parseIdentifier();var t=e.body=this.startNode(),r=t.body=[];for(this.expect(R.braceL);!this.match(R.braceR);){var n=this.startNode();if(this.match(R._import)){var i=this.lookahead();"type"!==i.value&&"typeof"!==i.value&&this.unexpected(null,"Imports within a `declare module` body must always be `import type` or `import typeof`"),this.parseImport(n)}else this.expectContextual("declare","Only declares and type imports are allowed inside declare module"),n=this.flowParseDeclare(n,!0);r.push(n)}return this.expect(R.braceR),this.finishNode(t,"BlockStatement"),this.finishNode(e,"DeclareModule")},le.flowParseDeclareModuleExports=function(e){return this.expectContextual("module"),this.expect(R.dot),this.expectContextual("exports"),e.typeAnnotation=this.flowParseTypeAnnotation(),this.semicolon(),this.finishNode(e,"DeclareModuleExports")},le.flowParseDeclareTypeAlias=function(e){return this.next(),this.flowParseTypeAlias(e),this.finishNode(e,"DeclareTypeAlias")},le.flowParseDeclareOpaqueType=function(e){return this.next(),this.flowParseOpaqueType(e,!0),this.finishNode(e,"DeclareOpaqueType")},le.flowParseDeclareInterface=function(e){return this.next(),this.flowParseInterfaceish(e),this.finishNode(e,"DeclareInterface")},le.flowParseInterfaceish=function(e){if(e.id=this.parseIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.extends=[],e.mixins=[],this.eat(R._extends))do{e.extends.push(this.flowParseInterfaceExtends())}while(this.eat(R.comma));if(this.isContextual("mixins")){this.next();do{e.mixins.push(this.flowParseInterfaceExtends())}while(this.eat(R.comma))}e.body=this.flowParseObjectType(!0,!1,!1)},le.flowParseInterfaceExtends=function(){var e=this.startNode();return e.id=this.flowParseQualifiedTypeIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterInstantiation():e.typeParameters=null,this.finishNode(e,"InterfaceExtends")},le.flowParseInterface=function(e){return this.flowParseInterfaceish(e,!1),this.finishNode(e,"InterfaceDeclaration")},le.flowParseRestrictedIdentifier=function(e){return ue.indexOf(this.state.value)>-1&&this.raise(this.state.start,"Cannot overwrite primitive type "+this.state.value),this.parseIdentifier(e)},le.flowParseTypeAlias=function(e){return e.id=this.flowParseRestrictedIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.right=this.flowParseTypeInitialiser(R.eq),this.semicolon(),this.finishNode(e,"TypeAlias")},le.flowParseOpaqueType=function(e,t){return this.expectContextual("type"),e.id=this.flowParseRestrictedIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.supertype=null,this.match(R.colon)&&(e.supertype=this.flowParseTypeInitialiser(R.colon)),e.impltype=null,t||(e.impltype=this.flowParseTypeInitialiser(R.eq)),this.semicolon(),this.finishNode(e,"OpaqueType")},le.flowParseTypeParameter=function(){var e=this.startNode(),t=this.flowParseVariance(),r=this.flowParseTypeAnnotatableIdentifier();return e.name=r.name,e.variance=t,e.bound=r.typeAnnotation,this.match(R.eq)&&(this.eat(R.eq),e.default=this.flowParseType()),this.finishNode(e,"TypeParameter")},le.flowParseTypeParameterDeclaration=function(){var e=this.state.inType,t=this.startNode();t.params=[],this.state.inType=!0,this.isRelational("<")||this.match(R.jsxTagStart)?this.next():this.unexpected();do{t.params.push(this.flowParseTypeParameter()),this.isRelational(">")||this.expect(R.comma)}while(!this.isRelational(">"));return this.expectRelational(">"),this.state.inType=e,this.finishNode(t,"TypeParameterDeclaration")},le.flowParseTypeParameterInstantiation=function(){var e=this.startNode(),t=this.state.inType;for(e.params=[],this.state.inType=!0,this.expectRelational("<");!this.isRelational(">");)e.params.push(this.flowParseType()),this.isRelational(">")||this.expect(R.comma);return this.expectRelational(">"),this.state.inType=t,this.finishNode(e,"TypeParameterInstantiation")},le.flowParseObjectPropertyKey=function(){return this.match(R.num)||this.match(R.string)?this.parseExprAtom():this.parseIdentifier(!0)},le.flowParseObjectTypeIndexer=function(e,t,r){return e.static=t,this.expect(R.bracketL),this.lookahead().type===R.colon?(e.id=this.flowParseObjectPropertyKey(),e.key=this.flowParseTypeInitialiser()):(e.id=null,e.key=this.flowParseType()),this.expect(R.bracketR),e.value=this.flowParseTypeInitialiser(),e.variance=r,this.flowObjectTypeSemicolon(),this.finishNode(e,"ObjectTypeIndexer")},le.flowParseObjectTypeMethodish=function(e){for(e.params=[],e.rest=null,e.typeParameters=null,this.isRelational("<")&&(e.typeParameters=this.flowParseTypeParameterDeclaration()),this.expect(R.parenL);!this.match(R.parenR)&&!this.match(R.ellipsis);)e.params.push(this.flowParseFunctionTypeParam()),this.match(R.parenR)||this.expect(R.comma);return this.eat(R.ellipsis)&&(e.rest=this.flowParseFunctionTypeParam()),this.expect(R.parenR),e.returnType=this.flowParseTypeInitialiser(),this.finishNode(e,"FunctionTypeAnnotation")},le.flowParseObjectTypeMethod=function(e,t,r,n){var i=this.startNodeAt(e,t);return i.value=this.flowParseObjectTypeMethodish(this.startNodeAt(e,t)),i.static=r,i.key=n,i.optional=!1,this.flowObjectTypeSemicolon(),this.finishNode(i,"ObjectTypeProperty")},le.flowParseObjectTypeCallProperty=function(e,t){var r=this.startNode();return e.static=t,e.value=this.flowParseObjectTypeMethodish(r),this.flowObjectTypeSemicolon(),this.finishNode(e,"ObjectTypeCallProperty")},le.flowParseObjectType=function(e,t,r){var n=this.state.inType;this.state.inType=!0;var i=this.startNode(),s=void 0,a=void 0,o=!1;i.callProperties=[],i.properties=[],i.indexers=[];var u=void 0,l=void 0;for(t&&this.match(R.braceBarL)?(this.expect(R.braceBarL),u=R.braceBarR,l=!0):(this.expect(R.braceL),u=R.braceR,l=!1),i.exact=l;!this.match(u);){var c=!1,f=this.state.start,p=this.state.startLoc;s=this.startNode(),e&&this.isContextual("static")&&this.lookahead().type!==R.colon&&(this.next(),o=!0);var d=this.state.start,h=this.flowParseVariance();this.match(R.bracketL)?i.indexers.push(this.flowParseObjectTypeIndexer(s,o,h)):this.match(R.parenL)||this.isRelational("<")?(h&&this.unexpected(d),i.callProperties.push(this.flowParseObjectTypeCallProperty(s,o))):this.match(R.ellipsis)?(r||this.unexpected(null,"Spread operator cannot appear in class or interface definitions"),h&&this.unexpected(h.start,"Spread properties cannot have variance"),this.expect(R.ellipsis),s.argument=this.flowParseType(),this.flowObjectTypeSemicolon(),i.properties.push(this.finishNode(s,"ObjectTypeSpreadProperty"))):(a=this.flowParseObjectPropertyKey(),this.isRelational("<")||this.match(R.parenL)?(h&&this.unexpected(h.start),i.properties.push(this.flowParseObjectTypeMethod(f,p,o,a))):(this.eat(R.question)&&(c=!0),s.key=a,s.value=this.flowParseTypeInitialiser(),s.optional=c,s.static=o,s.variance=h,this.flowObjectTypeSemicolon(),i.properties.push(this.finishNode(s,"ObjectTypeProperty")))),o=!1}this.expect(u);var m=this.finishNode(i,"ObjectTypeAnnotation");return this.state.inType=n,m},le.flowObjectTypeSemicolon=function(){this.eat(R.semi)||this.eat(R.comma)||this.match(R.braceR)||this.match(R.braceBarR)||this.unexpected()},le.flowParseQualifiedTypeIdentifier=function(e,t,r){e=e||this.state.start,t=t||this.state.startLoc;for(var n=r||this.parseIdentifier();this.eat(R.dot);){var i=this.startNodeAt(e,t);i.qualification=n,i.id=this.parseIdentifier(),n=this.finishNode(i,"QualifiedTypeIdentifier")}return n},le.flowParseGenericType=function(e,t,r){var n=this.startNodeAt(e,t);return n.typeParameters=null,n.id=this.flowParseQualifiedTypeIdentifier(e,t,r),this.isRelational("<")&&(n.typeParameters=this.flowParseTypeParameterInstantiation()),this.finishNode(n,"GenericTypeAnnotation")},le.flowParseTypeofType=function(){var e=this.startNode();return this.expect(R._typeof),e.argument=this.flowParsePrimaryType(),this.finishNode(e,"TypeofTypeAnnotation")},le.flowParseTupleType=function(){var e=this.startNode();for(e.types=[],this.expect(R.bracketL);this.state.pos0&&void 0!==arguments[0]?arguments[0]:[],t={params:e,rest:null};!this.match(R.parenR)&&!this.match(R.ellipsis);)t.params.push(this.flowParseFunctionTypeParam()),this.match(R.parenR)||this.expect(R.comma);return this.eat(R.ellipsis)&&(t.rest=this.flowParseFunctionTypeParam()),t},le.flowIdentToTypeAnnotation=function(e,t,r,n){switch(n.name){case"any":return this.finishNode(r,"AnyTypeAnnotation");case"void":return this.finishNode(r,"VoidTypeAnnotation");case"bool":case"boolean":return this.finishNode(r,"BooleanTypeAnnotation");case"mixed":return this.finishNode(r,"MixedTypeAnnotation");case"empty":return this.finishNode(r,"EmptyTypeAnnotation");case"number":return this.finishNode(r,"NumberTypeAnnotation");case"string":return this.finishNode(r,"StringTypeAnnotation");default:return this.flowParseGenericType(e,t,n)}},le.flowParsePrimaryType=function(){var e=this.state.start,t=this.state.startLoc,r=this.startNode(),n=void 0,i=void 0,s=!1,a=this.state.noAnonFunctionType;switch(this.state.type){case R.name:return this.flowIdentToTypeAnnotation(e,t,r,this.parseIdentifier());case R.braceL:return this.flowParseObjectType(!1,!1,!0);case R.braceBarL:return this.flowParseObjectType(!1,!0,!0);case R.bracketL:return this.flowParseTupleType();case R.relational:if("<"===this.state.value)return r.typeParameters=this.flowParseTypeParameterDeclaration(),this.expect(R.parenL),n=this.flowParseFunctionTypeParams(),r.params=n.params,r.rest=n.rest,this.expect(R.parenR),this.expect(R.arrow),r.returnType=this.flowParseType(),this.finishNode(r,"FunctionTypeAnnotation");break;case R.parenL:if(this.next(),!this.match(R.parenR)&&!this.match(R.ellipsis))if(this.match(R.name)){var o=this.lookahead().type;s=o!==R.question&&o!==R.colon}else s=!0;if(s){if(this.state.noAnonFunctionType=!1,i=this.flowParseType(),this.state.noAnonFunctionType=a,this.state.noAnonFunctionType||!(this.match(R.comma)||this.match(R.parenR)&&this.lookahead().type===R.arrow))return this.expect(R.parenR),i;this.eat(R.comma)}return n=i?this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(i)]):this.flowParseFunctionTypeParams(),r.params=n.params,r.rest=n.rest,this.expect(R.parenR),this.expect(R.arrow),r.returnType=this.flowParseType(),r.typeParameters=null,this.finishNode(r,"FunctionTypeAnnotation");case R.string:return this.parseLiteral(this.state.value,"StringLiteralTypeAnnotation");case R._true:case R._false:return r.value=this.match(R._true),this.next(),this.finishNode(r,"BooleanLiteralTypeAnnotation");case R.plusMin:if("-"===this.state.value)return this.next(), -this.match(R.num)||this.unexpected(null,"Unexpected token, expected number"),this.parseLiteral(-this.state.value,"NumericLiteralTypeAnnotation",r.start,r.loc.start);this.unexpected();case R.num:return this.parseLiteral(this.state.value,"NumericLiteralTypeAnnotation");case R._null:return r.value=this.match(R._null),this.next(),this.finishNode(r,"NullLiteralTypeAnnotation");case R._this:return r.value=this.match(R._this),this.next(),this.finishNode(r,"ThisTypeAnnotation");case R.star:return this.next(),this.finishNode(r,"ExistentialTypeParam");default:if("typeof"===this.state.type.keyword)return this.flowParseTypeofType()}this.unexpected()},le.flowParsePostfixType=function(){for(var e=this.state.start,t=this.state.startLoc,r=this.flowParsePrimaryType();!this.canInsertSemicolon()&&this.match(R.bracketL);){var n=this.startNodeAt(e,t);n.elementType=r,this.expect(R.bracketL),this.expect(R.bracketR),r=this.finishNode(n,"ArrayTypeAnnotation")}return r},le.flowParsePrefixType=function(){var e=this.startNode();return this.eat(R.question)?(e.typeAnnotation=this.flowParsePrefixType(),this.finishNode(e,"NullableTypeAnnotation")):this.flowParsePostfixType()},le.flowParseAnonFunctionWithoutParens=function(){var e=this.flowParsePrefixType();if(!this.state.noAnonFunctionType&&this.eat(R.arrow)){var t=this.startNodeAt(e.start,e.loc.start);return t.params=[this.reinterpretTypeAsFunctionTypeParam(e)],t.rest=null,t.returnType=this.flowParseType(),t.typeParameters=null,this.finishNode(t,"FunctionTypeAnnotation")}return e},le.flowParseIntersectionType=function(){var e=this.startNode();this.eat(R.bitwiseAND);var t=this.flowParseAnonFunctionWithoutParens();for(e.types=[t];this.eat(R.bitwiseAND);)e.types.push(this.flowParseAnonFunctionWithoutParens());return 1===e.types.length?t:this.finishNode(e,"IntersectionTypeAnnotation")},le.flowParseUnionType=function(){var e=this.startNode();this.eat(R.bitwiseOR);var t=this.flowParseIntersectionType();for(e.types=[t];this.eat(R.bitwiseOR);)e.types.push(this.flowParseIntersectionType());return 1===e.types.length?t:this.finishNode(e,"UnionTypeAnnotation")},le.flowParseType=function(){var e=this.state.inType;this.state.inType=!0;var t=this.flowParseUnionType();return this.state.inType=e,t},le.flowParseTypeAnnotation=function(){var e=this.startNode();return e.typeAnnotation=this.flowParseTypeInitialiser(),this.finishNode(e,"TypeAnnotation")},le.flowParseTypeAndPredicateAnnotation=function(){var e=this.startNode(),t=this.flowParseTypeAndPredicateInitialiser();return e.typeAnnotation=t[0],e.predicate=t[1],this.finishNode(e,"TypeAnnotation")},le.flowParseTypeAnnotatableIdentifier=function(){var e=this.flowParseRestrictedIdentifier();return this.match(R.colon)&&(e.typeAnnotation=this.flowParseTypeAnnotation(),this.finishNode(e,e.type)),e},le.typeCastToParameter=function(e){return e.expression.typeAnnotation=e.typeAnnotation,this.finishNodeAt(e.expression,e.expression.type,e.typeAnnotation.end,e.typeAnnotation.loc.end)},le.flowParseVariance=function(){var e=null;return this.match(R.plusMin)&&("+"===this.state.value?e="plus":"-"===this.state.value&&(e="minus"),this.next()),e};var ce=function(e){e.extend("parseFunctionBody",function(e){return function(t,r){return this.match(R.colon)&&!r&&(t.returnType=this.flowParseTypeAndPredicateAnnotation()),e.call(this,t,r)}}),e.extend("parseStatement",function(e){return function(t,r){if(this.state.strict&&this.match(R.name)&&"interface"===this.state.value){var n=this.startNode();return this.next(),this.flowParseInterface(n)}return e.call(this,t,r)}}),e.extend("parseExpressionStatement",function(e){return function(t,r){if("Identifier"===r.type)if("declare"===r.name){if(this.match(R._class)||this.match(R.name)||this.match(R._function)||this.match(R._var)||this.match(R._export))return this.flowParseDeclare(t)}else if(this.match(R.name)){if("interface"===r.name)return this.flowParseInterface(t);if("type"===r.name)return this.flowParseTypeAlias(t);if("opaque"===r.name)return this.flowParseOpaqueType(t,!1)}return e.call(this,t,r)}}),e.extend("shouldParseExportDeclaration",function(e){return function(){return this.isContextual("type")||this.isContextual("interface")||this.isContextual("opaque")||e.call(this)}}),e.extend("isExportDefaultSpecifier",function(e){return function(){return(!this.match(R.name)||"type"!==this.state.value&&"interface"!==this.state.value&&"opaque"!==this.state.value)&&e.call(this)}}),e.extend("parseConditional",function(e){return function(t,r,n,i,s){if(s&&this.match(R.question)){var a=this.state.clone();try{return e.call(this,t,r,n,i)}catch(e){if(e instanceof SyntaxError)return this.state=a,s.start=e.pos||this.state.start,t;throw e}}return e.call(this,t,r,n,i)}}),e.extend("parseParenItem",function(e){return function(t,r,n){if(t=e.call(this,t,r,n),this.eat(R.question)&&(t.optional=!0),this.match(R.colon)){var i=this.startNodeAt(r,n);return i.expression=t,i.typeAnnotation=this.flowParseTypeAnnotation(),this.finishNode(i,"TypeCastExpression")}return t}}),e.extend("parseExport",function(e){return function(t){return t=e.call(this,t),"ExportNamedDeclaration"===t.type&&(t.exportKind=t.exportKind||"value"),t}}),e.extend("parseExportDeclaration",function(e){return function(t){if(this.isContextual("type")){t.exportKind="type";var r=this.startNode();return this.next(),this.match(R.braceL)?(t.specifiers=this.parseExportSpecifiers(),this.parseExportFrom(t),null):this.flowParseTypeAlias(r)}if(this.isContextual("opaque")){t.exportKind="type";var n=this.startNode();return this.next(),this.flowParseOpaqueType(n,!1)}if(this.isContextual("interface")){t.exportKind="type";var i=this.startNode();return this.next(),this.flowParseInterface(i)}return e.call(this,t)}}),e.extend("parseClassId",function(e){return function(t){e.apply(this,arguments),this.isRelational("<")&&(t.typeParameters=this.flowParseTypeParameterDeclaration())}}),e.extend("isKeyword",function(e){return function(t){return(!this.state.inType||"void"!==t)&&e.call(this,t)}}),e.extend("readToken",function(e){return function(t){return!this.state.inType||62!==t&&60!==t?e.call(this,t):this.finishOp(R.relational,1)}}),e.extend("jsx_readToken",function(e){return function(){if(!this.state.inType)return e.call(this)}}),e.extend("toAssignable",function(e){return function(t,r,n){return"TypeCastExpression"===t.type?e.call(this,this.typeCastToParameter(t),r,n):e.call(this,t,r,n)}}),e.extend("toAssignableList",function(e){return function(t,r,n){for(var i=0;i2?n-2:0),s=2;s1114111||de(a)!=a)throw RangeError("Invalid code point: "+a);a<=65535?e.push(a):(a-=65536,t=55296+(a>>10),r=a%1024+56320,e.push(t,r)),(n+1==i||e.length>16384)&&(s+=pe.apply(null,e),e.length=0)}return s}}var 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j("...",!0,!0),R.jsxName=new T("jsxName"),R.jsxText=new T("jsxText",{beforeExpr:!0}),R.jsxTagStart=new T("jsxTagStart",{startsExpr:!0}),R.jsxTagEnd=new T("jsxTagEnd"),R.jsxTagStart.updateContext=function(){this.state.context.push(U.j_expr),this.state.context.push(U.j_oTag),this.state.exprAllowed=!1},R.jsxTagEnd.updateContext=function(e){var t=this.state.context.pop();t===U.j_oTag&&e===R.slash||t===U.j_cTag?(this.state.context.pop(),this.state.exprAllowed=this.curContext()===U.j_expr):this.state.exprAllowed=!0};var ge=J.prototype;ge.jsxReadToken=function(){for(var e="",t=this.state.pos;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated JSX contents");var r=this.input.charCodeAt(this.state.pos);switch(r){case 60:case 123:return this.state.pos===this.state.start?60===r&&this.state.exprAllowed?(++this.state.pos,this.finishToken(R.jsxTagStart)):this.getTokenFromCode(r):(e+=this.input.slice(t,this.state.pos),this.finishToken(R.jsxText,e));case 38:e+=this.input.slice(t,this.state.pos),e+=this.jsxReadEntity(),t=this.state.pos;break;default:o(r)?(e+=this.input.slice(t,this.state.pos),e+=this.jsxReadNewLine(!0),t=this.state.pos):++this.state.pos}}},ge.jsxReadNewLine=function(e){var t=this.input.charCodeAt(this.state.pos),r=void 0;return++this.state.pos,13===t&&10===this.input.charCodeAt(this.state.pos)?(++this.state.pos,r=e?"\n":"\r\n"):r=String.fromCharCode(t),++this.state.curLine,this.state.lineStart=this.state.pos,r},ge.jsxReadString=function(e){for(var t="",r=++this.state.pos;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated string constant");var n=this.input.charCodeAt(this.state.pos);if(n===e)break;38===n?(t+=this.input.slice(r,this.state.pos),t+=this.jsxReadEntity(),r=this.state.pos):o(n)?(t+=this.input.slice(r,this.state.pos),t+=this.jsxReadNewLine(!1),r=this.state.pos):++this.state.pos}return t+=this.input.slice(r,this.state.pos++),this.finishToken(R.string,t)},ge.jsxReadEntity=function(){for(var e="",t=0,r=void 0,n=this.input[this.state.pos],i=++this.state.pos;this.state.pos")}return r.openingElement=i,r.closingElement=s,r.children=n,this.match(R.relational)&&"<"===this.state.value&&this.raise(this.state.start,"Adjacent JSX elements must be wrapped in an enclosing tag"),this.finishNode(r,"JSXElement")},ge.jsxParseElement=function(){var e=this.state.start,t=this.state.startLoc;return this.next(),this.jsxParseElementAt(e,t)};var be=function(e){e.extend("parseExprAtom",function(e){return function(t){if(this.match(R.jsxText)){var r=this.parseLiteral(this.state.value,"JSXText");return r.extra=null,r}return this.match(R.jsxTagStart)?this.jsxParseElement():e.call(this,t)}}),e.extend("readToken",function(e){return function(t){if(this.state.inPropertyName)return e.call(this,t);var r=this.curContext();if(r===U.j_expr)return this.jsxReadToken();if(r===U.j_oTag||r===U.j_cTag){if(i(t))return this.jsxReadWord();if(62===t)return++this.state.pos,this.finishToken(R.jsxTagEnd);if((34===t||39===t)&&r===U.j_oTag)return this.jsxReadString(t)}return 60===t&&this.state.exprAllowed?(++this.state.pos,this.finishToken(R.jsxTagStart)):e.call(this,t)}}),e.extend("updateContext",function(e){return function(t){if(this.match(R.braceL)){var r=this.curContext();r===U.j_oTag?this.state.context.push(U.braceExpression):r===U.j_expr?this.state.context.push(U.templateQuasi):e.call(this,t),this.state.exprAllowed=!0}else{if(!this.match(R.slash)||t!==R.jsxTagStart)return e.call(this,t);this.state.context.length-=2,this.state.context.push(U.j_cTag),this.state.exprAllowed=!1}}})};K.estree=oe,K.flow=ce,K.jsx=be,t.parse=h,t.parseExpression=m,t.tokTypes=R},function(e,t,r){"use strict";var n=r(21),i=r(431),s=r(141),a=r(150)("IE_PROTO"),o=function(){},u=function(){var e,t=r(230)("iframe"),n=s.length;for(t.style.display="none",r(426).appendChild(t),t.src="javascript:",e=t.contentWindow.document,e.open(),e.write("