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49e37f5410
Previously, our Error.convertStackTrace function was provided by coffeestack, which only works for coffee-script. This adds a dependency on 'source-map-support', which works for any source file with inline source maps. This also refactors the code for registering our compilers (coffee-script, typescript, and babel) so that caching logic is shared.
71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
'use strict'
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const _ = require('underscore-plus')
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const crypto = require('crypto')
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const path = require('path')
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let babel = null
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let babelVersionDirectory = null
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// This field is used by the Gruntfile for compiling babel in bundled packages.
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exports.defaultOptions = {
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// Currently, the cache key is a function of:
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// * The version of Babel used to transpile the .js file.
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// * The contents of this defaultOptions object.
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// * The contents of the .js file.
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// That means that we cannot allow information from an unknown source
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// to affect the cache key for the output of transpilation, which means
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// we cannot allow users to override these default options via a .babelrc
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// file, because the contents of that .babelrc file will not make it into
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// the cache key. It would be great to support .babelrc files once we
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// have a way to do so that is safe with respect to caching.
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breakConfig: true,
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sourceMap: 'inline',
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blacklist: ['es6.forOf', 'useStrict'],
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optional: ['asyncToGenerator'],
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stage: 0
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}
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exports.shouldCompile = function(sourceCode) {
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return sourceCode.startsWith('/** use babel */') ||
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sourceCode.startsWith('"use babel"') ||
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sourceCode.startsWith("'use babel'")
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}
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exports.getCachePath = function(sourceCode) {
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if (babelVersionDirectory == null) {
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let babelVersion = require('babel-core/package.json').version
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babelVersionDirectory = path.join('js', 'babel', createVersionAndOptionsDigest(babelVersion, defaultOptions))
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}
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return path.join(
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babelVersionDirectory,
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crypto
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.createHash('sha1')
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.update(sourceCode, 'utf8')
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.digest('hex') + ".js"
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)
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}
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exports.compile = function(sourceCode, filePath) {
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if (!babel) {
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babel = require('babel-core')
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}
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let options = _.defaults({filename: filePath}, defaultOptions)
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return babel.transform(sourceCode, options).code
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}
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function createVersionAndOptionsDigest (version, options) {
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return crypto
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.createHash('sha1')
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.update('babel-core', 'utf8')
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.update('\0', 'utf8')
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.update(version, 'utf8')
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.update('\0', 'utf8')
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.update(JSON.stringify(options), 'utf8')
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.digest('hex')
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}
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