Add flow-remove-types require hook using pirates

Upstream: facebookarchive/flow-remove-types#62

build/flow-remove-types.js

@@ -0,0 +1,68 @@
+/*
+ * Temporary patch to work around
+ * https://github.com/standard-things/esm/issues/119.
+ *
+ * Upstream PR: https://github.com/flowtype/flow-remove-types/pull/62
+ */
+
+var flowRemoveTypes = require('flow-remove-types');
+var pirates = require('pirates');
+
+// Supported options:
+//
+// - all: Transform all files, not just those with a @flow comment.
+// - includes: A Regexp/String to determine which files should be transformed.
+// (alias: include)
+// - excludes: A Regexp/String to determine which files should not be
+// transformed, defaults to ignoring /node_modules/, provide null
+// to exclude nothing. (alias: exclude)
+var options;
+module.exports = function setOptions(newOptions) {
+ options = newOptions;
+}
+
+var jsLoader = require.extensions['.js'];
+var exts = [ '.js', '.mjs', '.jsx', '.flow', '.es6' ];
+
+var revert = pirates.addHook(function hook(code, filename) {
+ try {
+ var patched = flowRemoveTypes(code, options);
+ return patched.toString();
+ }
+ catch (e) {
+ e.message = filename + ': ' + e.message;
+ throw e;
+ }
+}, { exts, matcher: shouldTransform });
+
+function shouldTransform(filename) {
+ var includes = options && regexpPattern(options.includes || options.include);
+ var excludes =
+ options && 'excludes' in options ? regexpPattern(options.excludes) :
+ options && 'exclude' in options ? regexpPattern(options.exclude) :
+ /\/node_modules\//;
+ return (!includes || includes.test(filename)) && !(excludes && excludes.test(filename));
+}
+
+// Given a null | string | RegExp | any, returns null | Regexp or throws a
+// more helpful error.
+function regexpPattern(pattern) {
+ if (!pattern) {
+ return pattern;
+ }
+ // A very simplified glob transform which allows passing legible strings like
+ // "myPath/*.js" instead of a harder to read RegExp like /\/myPath\/.*\.js/.
+ if (typeof pattern === 'string') {
+ pattern = pattern.replace(/\./g, '\\.').replace(/\*/g, '.*');
+ if (pattern[0] !== '/') {
+ pattern = '/' + pattern;
+ }
+ return new RegExp(pattern);
+ }
+ if (typeof pattern.test === 'function') {
+ return pattern;
+ }
+ throw new Error(
+ 'flow-remove-types: includes and excludes must be RegExp or path strings. Got: ' + pattern
+ );
+}

package.json

@@ -84,6 +84,7 @@
  "npm-run-all": "^4.0.1",
  "nyc": "^10.1.2",
  "object.entries": "^1.0.4",
+ "pirates": "^3.0.2",
  "pngjs": "^3.0.0",
  "prismjs": "^1.8.1",
  "prop-types": "^15.6.0",

yarn.lock

@@ -6861,6 +6861,10 @@ node-libs-browser@^2.0.0:
  util "^0.10.3"
  vm-browserify "0.0.4"
 
+node-modules-regexp@^1.0.0:
+ version "1.0.0"
+ resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+
 node-pre-gyp@^0.6.39:
  version "0.6.39"
  resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.6.39.tgz#c00e96860b23c0e1420ac7befc5044e1d78d8649"
@@ -7540,6 +7544,12 @@ pinkie@^2.0.0:
  version "2.0.4"
  resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
 
+pirates@^3.0.2:
+ version "3.0.2"
+ resolved "https://registry.yarnpkg.com/pirates/-/pirates-3.0.2.tgz#7e6f85413fd9161ab4e12b539b06010d85954bb9"
+ dependencies:
+ node-modules-regexp "^1.0.0"
+
 pixelmatch@^4.0.2:
  version "4.0.2"
  resolved "https://registry.yarnpkg.com/pixelmatch/-/pixelmatch-4.0.2.tgz#8f47dcec5011b477b67db03c243bc1f3085e8854"