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a8b6c8292b
Turns out jest is _incredibly_ slow at resolving require paths like `require('fbjs/lib/foo')`. Like several milliseconds per require. Really adds up when all our files require `invariant` and `warning`. Here's a temporary hack to make things fast again.
Test Plan:
```
npm test src/renderers/shared/reconciler/__tests__/ReactCompositeComponent-test.js
```
has a self-proclaimed runtime of ~8 seconds now instead of ~35 seconds.
69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
'use strict';
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var path = require('path');
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var babel = require('babel');
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var coffee = require('coffee-script');
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var tsPreprocessor = require('./ts-preprocessor');
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var defaultLibraries = [
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require.resolve('./jest.d.ts'),
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require.resolve('../../src/isomorphic/modern/class/React.d.ts'),
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];
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var ts = tsPreprocessor(defaultLibraries);
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// This assumes the module map has been built. This might not be safe.
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// We should consider consuming this from a built fbjs module from npm.
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var moduleMap = require('fbjs/module-map');
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var babelPluginDEV = require('fbjs/scripts/babel/dev-expression');
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var babelPluginModules = require('fbjs/scripts/babel/rewrite-modules');
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module.exports = {
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process: function(src, filePath) {
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if (filePath.match(/\.coffee$/)) {
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return coffee.compile(src, {'bare': true});
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}
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if (filePath.match(/\.ts$/) && !filePath.match(/\.d\.ts$/)) {
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return ts.compile(src, filePath);
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}
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// TODO: make sure this stays in sync with gulpfile
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if (!filePath.match(/\/node_modules\//) &&
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!filePath.match(/\/third_party\//)) {
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var rv = babel.transform(src, {
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nonStandard: true,
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blacklist: [
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'spec.functionName',
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'validation.react',
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],
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optional: [
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'es7.trailingFunctionCommas',
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],
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plugins: [babelPluginDEV, babelPluginModules],
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filename: filePath,
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retainLines: true,
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_moduleMap: moduleMap,
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}).code;
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// hax to turn fbjs/lib/foo into /path/to/node_modules/fbjs/lib/foo
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// because jest is slooow with node_modules paths (facebook/jest#465)
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rv = rv.replace(
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/require\('(fbjs\/lib\/.+)'\)/g,
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function(call, arg) {
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return (
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'require(' +
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JSON.stringify(
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path.join(__dirname, '../../node_modules', arg)
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) +
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')'
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);
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}
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);
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return rv;
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}
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return src;
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},
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};
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