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common.ts
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import * as types from "./types";
import * as protocol from "./stdio_protocol";
declare const ESBUILD_VERSION: string;
function validateTarget(target: string): string {
target += ''
if (target.indexOf(',') >= 0) throw new Error(`Invalid target: ${target}`)
return target
}
let canBeAnything = () => null;
let mustBeBoolean = (value: boolean | undefined): string | null =>
typeof value === 'boolean' ? null : 'a boolean';
let mustBeBooleanOrObject = (value: Object | boolean | undefined): string | null =>
typeof value === 'boolean' || (typeof value === 'object' && !Array.isArray(value)) ? null : 'a boolean or an object';
let mustBeString = (value: string | undefined): string | null =>
typeof value === 'string' ? null : 'a string';
let mustBeRegExp = (value: RegExp | undefined): string | null =>
value instanceof RegExp ? null : 'a RegExp object';
let mustBeInteger = (value: number | undefined): string | null =>
typeof value === 'number' && value === (value | 0) ? null : 'an integer';
let mustBeFunction = (value: Function | undefined): string | null =>
typeof value === 'function' ? null : 'a function';
let mustBeArray = <T>(value: T[] | undefined): string | null =>
Array.isArray(value) ? null : 'an array';
let mustBeObject = (value: Object | undefined): string | null =>
typeof value === 'object' && value !== null && !Array.isArray(value) ? null : 'an object';
let mustBeArrayOrRecord = <T extends string>(value: T[] | Record<T, T> | undefined): string | null =>
typeof value === 'object' && value !== null ? null : 'an array or an object';
let mustBeObjectOrNull = (value: Object | null | undefined): string | null =>
typeof value === 'object' && !Array.isArray(value) ? null : 'an object or null';
let mustBeStringOrBoolean = (value: string | boolean | undefined): string | null =>
typeof value === 'string' || typeof value === 'boolean' ? null : 'a string or a boolean';
let mustBeStringOrObject = (value: string | Object | undefined): string | null =>
typeof value === 'string' || typeof value === 'object' && value !== null && !Array.isArray(value) ? null : 'a string or an object';
let mustBeStringOrArray = (value: string | string[] | undefined): string | null =>
typeof value === 'string' || Array.isArray(value) ? null : 'a string or an array';
let mustBeStringOrUint8Array = (value: string | Uint8Array | undefined): string | null =>
typeof value === 'string' || value instanceof Uint8Array ? null : 'a string or a Uint8Array';
type OptionKeys = { [key: string]: boolean };
function getFlag<T, K extends keyof T>(object: T, keys: OptionKeys, key: K, mustBeFn: (value: T[K]) => string | null): T[K] | undefined {
let value = object[key];
keys[key + ''] = true;
if (value === undefined) return undefined;
let mustBe = mustBeFn(value);
if (mustBe !== null) throw new Error(`"${key}" must be ${mustBe}`);
return value;
}
function checkForInvalidFlags(object: Object, keys: OptionKeys, where: string): void {
for (let key in object) {
if (!(key in keys)) {
throw new Error(`Invalid option ${where}: "${key}"`);
}
}
}
export function validateInitializeOptions(options: types.InitializeOptions): types.InitializeOptions {
let keys: OptionKeys = Object.create(null);
let wasmURL = getFlag(options, keys, 'wasmURL', mustBeString);
let worker = getFlag(options, keys, 'worker', mustBeBoolean);
checkForInvalidFlags(options, keys, 'in startService() call');
return {
wasmURL,
worker,
};
}
type CommonOptions = types.BuildOptions | types.TransformOptions;
function pushLogFlags(flags: string[], options: CommonOptions, keys: OptionKeys, isTTY: boolean, logLevelDefault: types.LogLevel): void {
let color = getFlag(options, keys, 'color', mustBeBoolean);
let logLevel = getFlag(options, keys, 'logLevel', mustBeString);
let logLimit = getFlag(options, keys, 'logLimit', mustBeInteger);
if (color !== void 0) flags.push(`--color=${color}`);
else if (isTTY) flags.push(`--color=true`); // This is needed to fix "execFileSync" which buffers stderr
flags.push(`--log-level=${logLevel || logLevelDefault}`);
flags.push(`--log-limit=${logLimit || 0}`);
}
function pushCommonFlags(flags: string[], options: CommonOptions, keys: OptionKeys): void {
let legalComments = getFlag(options, keys, 'legalComments', mustBeString);
let sourceRoot = getFlag(options, keys, 'sourceRoot', mustBeString);
let sourcesContent = getFlag(options, keys, 'sourcesContent', mustBeBoolean);
let target = getFlag(options, keys, 'target', mustBeStringOrArray);
let format = getFlag(options, keys, 'format', mustBeString);
let globalName = getFlag(options, keys, 'globalName', mustBeString);
let minify = getFlag(options, keys, 'minify', mustBeBoolean);
let minifySyntax = getFlag(options, keys, 'minifySyntax', mustBeBoolean);
let minifyWhitespace = getFlag(options, keys, 'minifyWhitespace', mustBeBoolean);
let minifyIdentifiers = getFlag(options, keys, 'minifyIdentifiers', mustBeBoolean);
let drop = getFlag(options, keys, 'drop', mustBeArray);
let charset = getFlag(options, keys, 'charset', mustBeString);
let treeShaking = getFlag(options, keys, 'treeShaking', mustBeBoolean);
let ignoreAnnotations = getFlag(options, keys, 'ignoreAnnotations', mustBeBoolean);
let jsx = getFlag(options, keys, 'jsx', mustBeString);
let jsxFactory = getFlag(options, keys, 'jsxFactory', mustBeString);
let jsxFragment = getFlag(options, keys, 'jsxFragment', mustBeString);
let define = getFlag(options, keys, 'define', mustBeObject);
let pure = getFlag(options, keys, 'pure', mustBeArray);
let keepNames = getFlag(options, keys, 'keepNames', mustBeBoolean);
if (legalComments) flags.push(`--legal-comments=${legalComments}`);
if (sourceRoot !== void 0) flags.push(`--source-root=${sourceRoot}`);
if (sourcesContent !== void 0) flags.push(`--sources-content=${sourcesContent}`);
if (target) {
if (Array.isArray(target)) flags.push(`--target=${Array.from(target).map(validateTarget).join(',')}`)
else flags.push(`--target=${validateTarget(target)}`)
}
if (format) flags.push(`--format=${format}`);
if (globalName) flags.push(`--global-name=${globalName}`);
if (minify) flags.push('--minify');
if (minifySyntax) flags.push('--minify-syntax');
if (minifyWhitespace) flags.push('--minify-whitespace');
if (minifyIdentifiers) flags.push('--minify-identifiers');
if (charset) flags.push(`--charset=${charset}`);
if (treeShaking !== void 0) flags.push(`--tree-shaking=${treeShaking}`);
if (ignoreAnnotations) flags.push(`--ignore-annotations`);
if (drop) for (let what of drop) flags.push(`--drop:${what}`);
if (jsx) flags.push(`--jsx=${jsx}`);
if (jsxFactory) flags.push(`--jsx-factory=${jsxFactory}`);
if (jsxFragment) flags.push(`--jsx-fragment=${jsxFragment}`);
if (define) {
for (let key in define) {
if (key.indexOf('=') >= 0) throw new Error(`Invalid define: ${key}`);
flags.push(`--define:${key}=${define[key]}`);
}
}
if (pure) for (let fn of pure) flags.push(`--pure:${fn}`);
if (keepNames) flags.push(`--keep-names`);
}
function flagsForBuildOptions(
callName: string,
options: types.BuildOptions,
isTTY: boolean,
logLevelDefault: types.LogLevel,
writeDefault: boolean,
): {
entries: [string, string][],
flags: string[],
write: boolean,
stdinContents: string | null,
stdinResolveDir: string | null,
absWorkingDir: string | undefined,
incremental: boolean,
nodePaths: string[],
watch: types.WatchMode | null,
} {
let flags: string[] = [];
let entries: [string, string][] = [];
let keys: OptionKeys = Object.create(null);
let stdinContents: string | null = null;
let stdinResolveDir: string | null = null;
let watchMode: types.WatchMode | null = null;
pushLogFlags(flags, options, keys, isTTY, logLevelDefault);
pushCommonFlags(flags, options, keys);
let sourcemap = getFlag(options, keys, 'sourcemap', mustBeStringOrBoolean);
let bundle = getFlag(options, keys, 'bundle', mustBeBoolean);
let watch = getFlag(options, keys, 'watch', mustBeBooleanOrObject);
let splitting = getFlag(options, keys, 'splitting', mustBeBoolean);
let preserveSymlinks = getFlag(options, keys, 'preserveSymlinks', mustBeBoolean);
let metafile = getFlag(options, keys, 'metafile', mustBeBoolean);
let outfile = getFlag(options, keys, 'outfile', mustBeString);
let outdir = getFlag(options, keys, 'outdir', mustBeString);
let outbase = getFlag(options, keys, 'outbase', mustBeString);
let platform = getFlag(options, keys, 'platform', mustBeString);
let tsconfig = getFlag(options, keys, 'tsconfig', mustBeString);
let resolveExtensions = getFlag(options, keys, 'resolveExtensions', mustBeArray);
let nodePathsInput = getFlag(options, keys, 'nodePaths', mustBeArray);
let mainFields = getFlag(options, keys, 'mainFields', mustBeArray);
let conditions = getFlag(options, keys, 'conditions', mustBeArray);
let external = getFlag(options, keys, 'external', mustBeArray);
let loader = getFlag(options, keys, 'loader', mustBeObject);
let outExtension = getFlag(options, keys, 'outExtension', mustBeObject);
let publicPath = getFlag(options, keys, 'publicPath', mustBeString);
let entryNames = getFlag(options, keys, 'entryNames', mustBeString);
let chunkNames = getFlag(options, keys, 'chunkNames', mustBeString);
let assetNames = getFlag(options, keys, 'assetNames', mustBeString);
let inject = getFlag(options, keys, 'inject', mustBeArray);
let banner = getFlag(options, keys, 'banner', mustBeObject);
let footer = getFlag(options, keys, 'footer', mustBeObject);
let entryPoints = getFlag(options, keys, 'entryPoints', mustBeArrayOrRecord);
let absWorkingDir = getFlag(options, keys, 'absWorkingDir', mustBeString);
let stdin = getFlag(options, keys, 'stdin', mustBeObject);
let write = getFlag(options, keys, 'write', mustBeBoolean) ?? writeDefault; // Default to true if not specified
let allowOverwrite = getFlag(options, keys, 'allowOverwrite', mustBeBoolean);
let incremental = getFlag(options, keys, 'incremental', mustBeBoolean) === true;
keys.plugins = true; // "plugins" has already been read earlier
checkForInvalidFlags(options, keys, `in ${callName}() call`);
if (sourcemap) flags.push(`--sourcemap${sourcemap === true ? '' : `=${sourcemap}`}`);
if (bundle) flags.push('--bundle');
if (allowOverwrite) flags.push('--allow-overwrite');
if (watch) {
flags.push('--watch');
if (typeof watch === 'boolean') {
watchMode = {};
} else {
let watchKeys: OptionKeys = Object.create(null);
let onRebuild = getFlag(watch, watchKeys, 'onRebuild', mustBeFunction);
checkForInvalidFlags(watch, watchKeys, `on "watch" in ${callName}() call`);
watchMode = { onRebuild };
}
}
if (splitting) flags.push('--splitting');
if (preserveSymlinks) flags.push('--preserve-symlinks');
if (metafile) flags.push(`--metafile`);
if (outfile) flags.push(`--outfile=${outfile}`);
if (outdir) flags.push(`--outdir=${outdir}`);
if (outbase) flags.push(`--outbase=${outbase}`);
if (platform) flags.push(`--platform=${platform}`);
if (tsconfig) flags.push(`--tsconfig=${tsconfig}`);
if (resolveExtensions) {
let values: string[] = [];
for (let value of resolveExtensions) {
value += '';
if (value.indexOf(',') >= 0) throw new Error(`Invalid resolve extension: ${value}`);
values.push(value);
}
flags.push(`--resolve-extensions=${values.join(',')}`);
}
if (publicPath) flags.push(`--public-path=${publicPath}`);
if (entryNames) flags.push(`--entry-names=${entryNames}`);
if (chunkNames) flags.push(`--chunk-names=${chunkNames}`);
if (assetNames) flags.push(`--asset-names=${assetNames}`);
if (mainFields) {
let values: string[] = [];
for (let value of mainFields) {
value += '';
if (value.indexOf(',') >= 0) throw new Error(`Invalid main field: ${value}`);
values.push(value);
}
flags.push(`--main-fields=${values.join(',')}`);
}
if (conditions) {
let values: string[] = [];
for (let value of conditions) {
value += '';
if (value.indexOf(',') >= 0) throw new Error(`Invalid condition: ${value}`);
values.push(value);
}
flags.push(`--conditions=${values.join(',')}`);
}
if (external) for (let name of external) flags.push(`--external:${name}`);
if (banner) {
for (let type in banner) {
if (type.indexOf('=') >= 0) throw new Error(`Invalid banner file type: ${type}`);
flags.push(`--banner:${type}=${banner[type]}`);
}
}
if (footer) {
for (let type in footer) {
if (type.indexOf('=') >= 0) throw new Error(`Invalid footer file type: ${type}`);
flags.push(`--footer:${type}=${footer[type]}`);
}
}
if (inject) for (let path of inject) flags.push(`--inject:${path}`);
if (loader) {
for (let ext in loader) {
if (ext.indexOf('=') >= 0) throw new Error(`Invalid loader extension: ${ext}`);
flags.push(`--loader:${ext}=${loader[ext]}`);
}
}
if (outExtension) {
for (let ext in outExtension) {
if (ext.indexOf('=') >= 0) throw new Error(`Invalid out extension: ${ext}`);
flags.push(`--out-extension:${ext}=${outExtension[ext]}`);
}
}
if (entryPoints) {
if (Array.isArray(entryPoints)) {
for (let entryPoint of entryPoints) {
entries.push(['', entryPoint + '']);
}
} else {
for (let [key, value] of Object.entries(entryPoints)) {
entries.push([key + '', value + '']);
}
}
}
if (stdin) {
let stdinKeys: OptionKeys = Object.create(null);
let contents = getFlag(stdin, stdinKeys, 'contents', mustBeString);
let resolveDir = getFlag(stdin, stdinKeys, 'resolveDir', mustBeString);
let sourcefile = getFlag(stdin, stdinKeys, 'sourcefile', mustBeString);
let loader = getFlag(stdin, stdinKeys, 'loader', mustBeString);
checkForInvalidFlags(stdin, stdinKeys, 'in "stdin" object');
if (sourcefile) flags.push(`--sourcefile=${sourcefile}`);
if (loader) flags.push(`--loader=${loader}`);
if (resolveDir) stdinResolveDir = resolveDir + '';
stdinContents = contents ? contents + '' : '';
}
let nodePaths: string[] = [];
if (nodePathsInput) {
for (let value of nodePathsInput) {
value += '';
nodePaths.push(value);
}
}
return {
entries,
flags,
write,
stdinContents,
stdinResolveDir,
absWorkingDir,
incremental,
nodePaths,
watch: watchMode,
};
}
function flagsForTransformOptions(
callName: string,
options: types.TransformOptions,
isTTY: boolean,
logLevelDefault: types.LogLevel,
): string[] {
let flags: string[] = [];
let keys: OptionKeys = Object.create(null);
pushLogFlags(flags, options, keys, isTTY, logLevelDefault);
pushCommonFlags(flags, options, keys);
let sourcemap = getFlag(options, keys, 'sourcemap', mustBeStringOrBoolean);
let tsconfigRaw = getFlag(options, keys, 'tsconfigRaw', mustBeStringOrObject);
let sourcefile = getFlag(options, keys, 'sourcefile', mustBeString);
let loader = getFlag(options, keys, 'loader', mustBeString);
let banner = getFlag(options, keys, 'banner', mustBeString);
let footer = getFlag(options, keys, 'footer', mustBeString);
checkForInvalidFlags(options, keys, `in ${callName}() call`);
if (sourcemap) flags.push(`--sourcemap=${sourcemap === true ? 'external' : sourcemap}`);
if (tsconfigRaw) flags.push(`--tsconfig-raw=${typeof tsconfigRaw === 'string' ? tsconfigRaw : JSON.stringify(tsconfigRaw)}`);
if (sourcefile) flags.push(`--sourcefile=${sourcefile}`);
if (loader) flags.push(`--loader=${loader}`);
if (banner) flags.push(`--banner=${banner}`);
if (footer) flags.push(`--footer=${footer}`);
return flags;
}
export interface StreamIn {
writeToStdin: (data: Uint8Array) => void;
readFileSync?: (path: string, encoding: 'utf8') => string;
isSync: boolean;
isBrowser: boolean;
esbuild: types.PluginBuild['esbuild'];
}
export interface StreamOut {
readFromStdout: (data: Uint8Array) => void;
afterClose: () => void;
service: StreamService;
}
export interface StreamFS {
writeFile(contents: string, callback: (path: string | null) => void): void;
readFile(path: string, callback: (err: Error | null, contents: string | null) => void): void;
}
export interface Refs {
ref(): void;
unref(): void;
}
export interface StreamService {
buildOrServe(args: {
callName: string,
refs: Refs | null,
serveOptions: types.ServeOptions | null,
options: types.BuildOptions,
isTTY: boolean,
defaultWD: string,
callback: (err: Error | null, res: types.BuildResult | types.ServeResult | null) => void,
}): void;
transform(args: {
callName: string,
refs: Refs | null,
input: string,
options: types.TransformOptions,
isTTY: boolean,
fs: StreamFS,
callback: (err: Error | null, res: types.TransformResult | null) => void,
}): void;
formatMessages(args: {
callName: string,
refs: Refs | null,
messages: types.PartialMessage[],
options: types.FormatMessagesOptions,
callback: (err: Error | null, res: string[] | null) => void,
}): void;
analyzeMetafile(args: {
callName: string,
refs: Refs | null,
metafile: string,
options: types.AnalyzeMetafileOptions | undefined,
callback: (err: Error | null, res: string | null) => void,
}): void;
}
// This can't use any promises in the main execution flow because it must work
// for both sync and async code. There is an exception for plugin code because
// that can't work in sync code anyway.
export function createChannel(streamIn: StreamIn): StreamOut {
type PluginCallback = (request: protocol.OnStartRequest | protocol.OnResolveRequest | protocol.OnLoadRequest) =>
Promise<protocol.OnStartResponse | protocol.OnResolveResponse | protocol.OnLoadResponse>;
type WatchCallback = (error: Error | null, response: any) => void;
interface ServeCallbacks {
onRequest: types.ServeOptions['onRequest'];
onWait: (error: string | null) => void;
}
let responseCallbacks = new Map<number, (error: string | null, response: protocol.Value) => void>();
let pluginCallbacks = new Map<number, PluginCallback>();
let watchCallbacks = new Map<number, WatchCallback>();
let serveCallbacks = new Map<number, ServeCallbacks>();
let isClosed = false;
let nextRequestID = 0;
let nextBuildKey = 0;
// Use a long-lived buffer to store stdout data
let stdout = new Uint8Array(16 * 1024);
let stdoutUsed = 0;
let readFromStdout = (chunk: Uint8Array) => {
// Append the chunk to the stdout buffer, growing it as necessary
let limit = stdoutUsed + chunk.length;
if (limit > stdout.length) {
let swap = new Uint8Array(limit * 2);
swap.set(stdout);
stdout = swap;
}
stdout.set(chunk, stdoutUsed);
stdoutUsed += chunk.length;
// Process all complete (i.e. not partial) packets
let offset = 0;
while (offset + 4 <= stdoutUsed) {
let length = protocol.readUInt32LE(stdout, offset);
if (offset + 4 + length > stdoutUsed) {
break;
}
offset += 4;
handleIncomingPacket(stdout.subarray(offset, offset + length));
offset += length;
}
if (offset > 0) {
stdout.copyWithin(0, offset, stdoutUsed);
stdoutUsed -= offset;
}
};
let afterClose = () => {
// When the process is closed, fail all pending requests
isClosed = true;
for (let callback of responseCallbacks.values()) {
callback('The service was stopped', null);
}
responseCallbacks.clear();
for (let callbacks of serveCallbacks.values()) {
callbacks.onWait('The service was stopped');
}
serveCallbacks.clear();
for (let callback of watchCallbacks.values()) {
try {
callback(new Error('The service was stopped'), null);
} catch (e) {
console.error(e)
}
}
watchCallbacks.clear();
};
let sendRequest = <Req, Res>(refs: Refs | null, value: Req, callback: (error: string | null, response: Res | null) => void): void => {
if (isClosed) return callback('The service is no longer running', null);
let id = nextRequestID++;
responseCallbacks.set(id, (error, response) => {
try {
callback(error, response as any);
} finally {
if (refs) refs.unref() // Do this after the callback so the callback can extend the lifetime if needed
}
});
if (refs) refs.ref()
streamIn.writeToStdin(protocol.encodePacket({ id, isRequest: true, value: value as any }));
};
let sendResponse = (id: number, value: protocol.Value): void => {
if (isClosed) throw new Error('The service is no longer running');
streamIn.writeToStdin(protocol.encodePacket({ id, isRequest: false, value }));
};
type RequestType =
| protocol.PingRequest
| protocol.OnStartRequest
| protocol.OnResolveRequest
| protocol.OnLoadRequest
| protocol.OnRequestRequest
| protocol.OnWaitRequest
| protocol.OnWatchRebuildRequest
let handleRequest = async (id: number, request: RequestType) => {
// Catch exceptions in the code below so they get passed to the caller
try {
switch (request.command) {
case 'ping': {
sendResponse(id, {});
break;
}
case 'on-start': {
let callback = pluginCallbacks.get(request.key);
if (!callback) sendResponse(id, {});
else sendResponse(id, await callback!(request) as any);
break;
}
case 'on-resolve': {
let callback = pluginCallbacks.get(request.key);
if (!callback) sendResponse(id, {});
else sendResponse(id, await callback!(request) as any);
break;
}
case 'on-load': {
let callback = pluginCallbacks.get(request.key);
if (!callback) sendResponse(id, {});
else sendResponse(id, await callback!(request) as any);
break;
}
case 'serve-request': {
let callbacks = serveCallbacks.get(request.key);
if (callbacks && callbacks.onRequest) callbacks.onRequest(request.args);
sendResponse(id, {});
break;
}
case 'serve-wait': {
let callbacks = serveCallbacks.get(request.key);
if (callbacks) callbacks.onWait(request.error);
sendResponse(id, {});
break;
}
case 'watch-rebuild': {
let callback = watchCallbacks.get(request.key);
try {
if (callback) callback(null, request.args);
} catch (err) {
console.error(err);
}
sendResponse(id, {});
break;
}
default:
throw new Error(`Invalid command: ` + (request as any)!.command);
}
} catch (e) {
sendResponse(id, { errors: [extractErrorMessageV8(e, streamIn, null, void 0, '')] } as any);
}
};
let isFirstPacket = true;
let handleIncomingPacket = (bytes: Uint8Array): void => {
// The first packet is a version check
if (isFirstPacket) {
isFirstPacket = false;
// Validate the binary's version number to make sure esbuild was installed
// correctly. This check was added because some people have reported
// errors that appear to indicate an incorrect installation.
let binaryVersion = String.fromCharCode(...bytes);
if (binaryVersion !== ESBUILD_VERSION) {
throw new Error(`Cannot start service: Host version "${ESBUILD_VERSION}" does not match binary version ${JSON.stringify(binaryVersion)}`);
}
return;
}
let packet = protocol.decodePacket(bytes) as any;
if (packet.isRequest) {
handleRequest(packet.id, packet.value);
}
else {
let callback = responseCallbacks.get(packet.id)!;
responseCallbacks.delete(packet.id);
if (packet.value.error) callback(packet.value.error, {});
else callback(null, packet.value);
}
};
type RunOnEndCallbacks = (result: types.BuildResult, logPluginError: LogPluginErrorCallback, done: () => void) => void;
type LogPluginErrorCallback = (e: any, pluginName: string, note: types.Note | undefined, done: (message: types.Message) => void) => void;
let handlePlugins = async (
initialOptions: types.BuildOptions,
plugins: types.Plugin[],
buildKey: number,
stash: ObjectStash,
refs: Refs | null,
): Promise<
| { ok: true, requestPlugins: protocol.BuildPlugin[], runOnEndCallbacks: RunOnEndCallbacks, pluginRefs: Refs }
| { ok: false, error: any, pluginName: string }
> => {
let onStartCallbacks: {
name: string,
note: () => types.Note | undefined,
callback: () => (types.OnStartResult | null | void | Promise<types.OnStartResult | null | void>),
}[] = [];
let onEndCallbacks: {
name: string,
note: () => types.Note | undefined,
callback: (result: types.BuildResult) => (void | Promise<void>),
}[] = [];
let onResolveCallbacks: {
[id: number]: {
name: string,
note: () => types.Note | undefined,
callback: (args: types.OnResolveArgs) =>
(types.OnResolveResult | null | undefined | Promise<types.OnResolveResult | null | undefined>),
},
} = {};
let onLoadCallbacks: {
[id: number]: {
name: string,
note: () => types.Note | undefined,
callback: (args: types.OnLoadArgs) =>
(types.OnLoadResult | null | undefined | Promise<types.OnLoadResult | null | undefined>),
},
} = {};
let nextCallbackID = 0;
let i = 0;
let requestPlugins: protocol.BuildPlugin[] = [];
let isSetupDone = false;
// Clone the plugin array to guard against mutation during iteration
plugins = [...plugins];
for (let item of plugins) {
let keys: OptionKeys = {};
if (typeof item !== 'object') throw new Error(`Plugin at index ${i} must be an object`);
const name = getFlag(item, keys, 'name', mustBeString);
if (typeof name !== 'string' || name === '') throw new Error(`Plugin at index ${i} is missing a name`);
try {
let setup = getFlag(item, keys, 'setup', mustBeFunction);
if (typeof setup !== 'function') throw new Error(`Plugin is missing a setup function`);
checkForInvalidFlags(item, keys, `on plugin ${JSON.stringify(name)}`);
let plugin: protocol.BuildPlugin = {
name,
onResolve: [],
onLoad: [],
};
i++;
let resolve = (path: string, options: types.ResolveOptions = {}): Promise<types.ResolveResult> => {
if (!isSetupDone) throw new Error('Cannot call "resolve" before plugin setup has completed');
if (typeof path !== 'string') throw new Error(`The path to resolve must be a string`);
let keys: OptionKeys = Object.create(null);
let pluginName = getFlag(options, keys, 'pluginName', mustBeString);
let importer = getFlag(options, keys, 'importer', mustBeString);
let namespace = getFlag(options, keys, 'namespace', mustBeString);
let resolveDir = getFlag(options, keys, 'resolveDir', mustBeString);
let kind = getFlag(options, keys, 'kind', mustBeString);
let pluginData = getFlag(options, keys, 'pluginData', canBeAnything);
checkForInvalidFlags(options, keys, 'in resolve() call');
return new Promise((resolve, reject) => {
const request: protocol.ResolveRequest = {
command: 'resolve',
path,
key: buildKey,
pluginName: name,
}
if (pluginName != null) request.pluginName = pluginName
if (importer != null) request.importer = importer
if (namespace != null) request.namespace = namespace
if (resolveDir != null) request.resolveDir = resolveDir
if (kind != null) request.kind = kind
if (pluginData != null) request.pluginData = stash.store(pluginData)
sendRequest<protocol.ResolveRequest, protocol.ResolveResponse>(refs, request, (error, response) => {
if (error !== null) reject(new Error(error))
else resolve({
errors: replaceDetailsInMessages(response!.errors, stash),
warnings: replaceDetailsInMessages(response!.warnings, stash),
path: response!.path,
external: response!.external,
sideEffects: response!.sideEffects,
namespace: response!.namespace,
suffix: response!.suffix,
pluginData: stash.load(response!.pluginData),
})
})
})
}
let promise = setup({
initialOptions,
resolve,
onStart(callback) {
let registeredText = `This error came from the "onStart" callback registered here:`
let registeredNote = extractCallerV8(new Error(registeredText), streamIn, 'onStart');
onStartCallbacks.push({ name: name!, callback, note: registeredNote });
},
onEnd(callback) {
let registeredText = `This error came from the "onEnd" callback registered here:`
let registeredNote = extractCallerV8(new Error(registeredText), streamIn, 'onEnd');
onEndCallbacks.push({ name: name!, callback, note: registeredNote });
},
onResolve(options, callback) {
let registeredText = `This error came from the "onResolve" callback registered here:`
let registeredNote = extractCallerV8(new Error(registeredText), streamIn, 'onResolve');
let keys: OptionKeys = {};
let filter = getFlag(options, keys, 'filter', mustBeRegExp);
let namespace = getFlag(options, keys, 'namespace', mustBeString);
checkForInvalidFlags(options, keys, `in onResolve() call for plugin ${JSON.stringify(name)}`);
if (filter == null) throw new Error(`onResolve() call is missing a filter`);
let id = nextCallbackID++;
onResolveCallbacks[id] = { name: name!, callback, note: registeredNote };
plugin.onResolve.push({ id, filter: filter.source, namespace: namespace || '' });
},
onLoad(options, callback) {
let registeredText = `This error came from the "onLoad" callback registered here:`
let registeredNote = extractCallerV8(new Error(registeredText), streamIn, 'onLoad');
let keys: OptionKeys = {};
let filter = getFlag(options, keys, 'filter', mustBeRegExp);
let namespace = getFlag(options, keys, 'namespace', mustBeString);
checkForInvalidFlags(options, keys, `in onLoad() call for plugin ${JSON.stringify(name)}`);
if (filter == null) throw new Error(`onLoad() call is missing a filter`);
let id = nextCallbackID++;
onLoadCallbacks[id] = { name: name!, callback, note: registeredNote };
plugin.onLoad.push({ id, filter: filter.source, namespace: namespace || '' });
},
esbuild: streamIn.esbuild,
});
// Await a returned promise if there was one. This allows plugins to do
// some asynchronous setup while still retaining the ability to modify
// the build options. This deliberately serializes asynchronous plugin
// setup instead of running them concurrently so that build option
// modifications are easier to reason about.
if (promise) await promise;
requestPlugins.push(plugin);
} catch (e) {
return { ok: false, error: e, pluginName: name }
}
}
const callback: PluginCallback = async (request) => {
switch (request.command) {
case 'on-start': {
let response: protocol.OnStartResponse = { errors: [], warnings: [] };
await Promise.all(onStartCallbacks.map(async ({ name, callback, note }) => {
try {
let result = await callback();
if (result != null) {
if (typeof result !== 'object') throw new Error(`Expected onStart() callback in plugin ${JSON.stringify(name)} to return an object`);
let keys: OptionKeys = {};
let errors = getFlag(result, keys, 'errors', mustBeArray);
let warnings = getFlag(result, keys, 'warnings', mustBeArray);
checkForInvalidFlags(result, keys, `from onStart() callback in plugin ${JSON.stringify(name)}`);
if (errors != null) response.errors!.push(...sanitizeMessages(errors, 'errors', stash, name));
if (warnings != null) response.warnings!.push(...sanitizeMessages(warnings, 'warnings', stash, name));
}
} catch (e) {
response.errors!.push(extractErrorMessageV8(e, streamIn, stash, note && note(), name));
}
}))
return response;
}
case 'on-resolve': {
let response: protocol.OnResolveResponse = {}, name = '', callback, note;
for (let id of request.ids) {
try {
({ name, callback, note } = onResolveCallbacks[id]);
let result = await callback({
path: request.path,
importer: request.importer,
namespace: request.namespace,
resolveDir: request.resolveDir,
kind: request.kind,
pluginData: stash.load(request.pluginData),
});
if (result != null) {
if (typeof result !== 'object') throw new Error(`Expected onResolve() callback in plugin ${JSON.stringify(name)} to return an object`);
let keys: OptionKeys = {};
let pluginName = getFlag(result, keys, 'pluginName', mustBeString);
let path = getFlag(result, keys, 'path', mustBeString);
let namespace = getFlag(result, keys, 'namespace', mustBeString);
let suffix = getFlag(result, keys, 'suffix', mustBeString);
let external = getFlag(result, keys, 'external', mustBeBoolean);
let sideEffects = getFlag(result, keys, 'sideEffects', mustBeBoolean);
let pluginData = getFlag(result, keys, 'pluginData', canBeAnything);
let errors = getFlag(result, keys, 'errors', mustBeArray);
let warnings = getFlag(result, keys, 'warnings', mustBeArray);
let watchFiles = getFlag(result, keys, 'watchFiles', mustBeArray);
let watchDirs = getFlag(result, keys, 'watchDirs', mustBeArray);
checkForInvalidFlags(result, keys, `from onResolve() callback in plugin ${JSON.stringify(name)}`);
response.id = id;
if (pluginName != null) response.pluginName = pluginName;
if (path != null) response.path = path;
if (namespace != null) response.namespace = namespace;
if (suffix != null) response.suffix = suffix;
if (external != null) response.external = external;
if (sideEffects != null) response.sideEffects = sideEffects;
if (pluginData != null) response.pluginData = stash.store(pluginData);
if (errors != null) response.errors = sanitizeMessages(errors, 'errors', stash, name);
if (warnings != null) response.warnings = sanitizeMessages(warnings, 'warnings', stash, name);
if (watchFiles != null) response.watchFiles = sanitizeStringArray(watchFiles, 'watchFiles');
if (watchDirs != null) response.watchDirs = sanitizeStringArray(watchDirs, 'watchDirs');
break;
}
} catch (e) {
return { id, errors: [extractErrorMessageV8(e, streamIn, stash, note && note(), name)] };
}
}
return response;
}
case 'on-load': {
let response: protocol.OnLoadResponse = {}, name = '', callback, note;
for (let id of request.ids) {
try {
({ name, callback, note } = onLoadCallbacks[id]);
let result = await callback({
path: request.path,
namespace: request.namespace,
suffix: request.suffix,
pluginData: stash.load(request.pluginData),
});
if (result != null) {
if (typeof result !== 'object') throw new Error(`Expected onLoad() callback in plugin ${JSON.stringify(name)} to return an object`);
let keys: OptionKeys = {};
let pluginName = getFlag(result, keys, 'pluginName', mustBeString);
let contents = getFlag(result, keys, 'contents', mustBeStringOrUint8Array);
let resolveDir = getFlag(result, keys, 'resolveDir', mustBeString);
let pluginData = getFlag(result, keys, 'pluginData', canBeAnything);
let loader = getFlag(result, keys, 'loader', mustBeString);
let errors = getFlag(result, keys, 'errors', mustBeArray);
let warnings = getFlag(result, keys, 'warnings', mustBeArray);
let watchFiles = getFlag(result, keys, 'watchFiles', mustBeArray);
let watchDirs = getFlag(result, keys, 'watchDirs', mustBeArray);
checkForInvalidFlags(result, keys, `from onLoad() callback in plugin ${JSON.stringify(name)}`);
response.id = id;
if (pluginName != null) response.pluginName = pluginName;
if (contents instanceof Uint8Array) response.contents = contents;
else if (contents != null) response.contents = protocol.encodeUTF8(contents);
if (resolveDir != null) response.resolveDir = resolveDir;
if (pluginData != null) response.pluginData = stash.store(pluginData);
if (loader != null) response.loader = loader;
if (errors != null) response.errors = sanitizeMessages(errors, 'errors', stash, name);
if (warnings != null) response.warnings = sanitizeMessages(warnings, 'warnings', stash, name);
if (watchFiles != null) response.watchFiles = sanitizeStringArray(watchFiles, 'watchFiles');
if (watchDirs != null) response.watchDirs = sanitizeStringArray(watchDirs, 'watchDirs');
break;
}
} catch (e) {
return { id, errors: [extractErrorMessageV8(e, streamIn, stash, note && note(), name)] };
}
}
return response;
}
default:
throw new Error(`Invalid command: ` + (request as any).command);
}
}
let runOnEndCallbacks: RunOnEndCallbacks = (result, logPluginError, done) => done();
if (onEndCallbacks.length > 0) {
runOnEndCallbacks = (result, logPluginError, done) => {
(async () => {
for (const { name, callback, note } of onEndCallbacks) {
try {
await callback(result)
} catch (e) {
result.errors.push(await new Promise<types.Message>(resolve => logPluginError(e, name, note && note(), resolve)))
}
}
})().then(done)
}
}
isSetupDone = true;
let refCount = 0;
return {
ok: true,
requestPlugins,
runOnEndCallbacks,
pluginRefs: {
ref() { if (++refCount === 1) pluginCallbacks.set(buildKey, callback); },
unref() { if (--refCount === 0) pluginCallbacks.delete(buildKey) },
},
}
};
interface ServeData {
wait: Promise<void>
stop: () => void
}
let buildServeData = (refs: Refs | null, options: types.ServeOptions, request: protocol.BuildRequest, key: number): ServeData => {
let keys: OptionKeys = {};
let port = getFlag(options, keys, 'port', mustBeInteger);
let host = getFlag(options, keys, 'host', mustBeString);
let servedir = getFlag(options, keys, 'servedir', mustBeString);
let onRequest = getFlag(options, keys, 'onRequest', mustBeFunction);
let onWait: ServeCallbacks['onWait'];
let wait = new Promise<void>((resolve, reject) => {
onWait = error => {
serveCallbacks.delete(key);
if (error !== null) reject(new Error(error));
else resolve();
};
});
request.serve = {};
checkForInvalidFlags(options, keys, `in serve() call`);
if (port !== void 0) request.serve.port = port;
if (host !== void 0) request.serve.host = host;
if (servedir !== void 0) request.serve.servedir = servedir;
serveCallbacks.set(key, {
onRequest,
onWait: onWait!,
});
return {
wait,
stop() {
sendRequest<protocol.ServeStopRequest, null>(refs, { command: 'serve-stop', key }, () => {
// We don't care about the result
});
},
};
};
const buildLogLevelDefault = 'warning';
const transformLogLevelDefault = 'silent';
let buildOrServe: StreamService['buildOrServe'] = args => {
let key = nextBuildKey++;
const details = createObjectStash();
let plugins: types.Plugin[] | undefined;
let { refs, options, isTTY, callback } = args;
if (typeof options === 'object') {
let value = options.plugins;