Current File : //www/varak.net/wiki.varak.net/extensions/MobileFrontend/webpack.config.js
/* eslint-env node, es6 */
const
CleanPlugin = require( 'clean-webpack-plugin' ),
glob = require( 'glob' ),
path = require( 'path' ),
prod = process.env.NODE_ENV === 'production',
// The output directory for all build artifacts. Only absolute paths are accepted by
// output.path.
distDir = path.resolve( __dirname, 'resources/dist' ),
// The extension used for source map files.
srcMapExt = '.map.json';
module.exports = {
// Apply the rule of silence: https://wikipedia.org/wiki/Unix_philosophy.
stats: {
all: false,
errors: true,
warnings: true
},
// Fail on the first build error instead of tolerating it for prod builds. This seems to
// correspond to optimization.noEmitOnErrors.
bail: prod,
// Specify that all paths are relative the Webpack configuration directory not the current
// working directory.
context: __dirname,
// A map of ResourceLoader module / entry chunk names to JavaScript files to pack. E.g.,
// "mobile.startup" maps to src/mobile.startup/mobile.startup.js. The JavaScript entry could be
// named simply "index.js" but the redundancy of "[name].js" improves presentation and search-
// ability in some tools. Entry names are tightly coupled to output.filename and extension.json.
entry: {
// Note that the tests.mobilefrontend module only exists inside Special:JavaScriptTest test
// runs. It provides scaffolding (template mocks) and does not appear inside the
// ResourceLoader startup module, so does not use the `mobile.` prefix that other modules
// do. This is consistent with other test related artifacts. E.g.,
// test.mediawiki.qunit.testrunner and test.sinonjs.
// The glob module is used to ensure that all tests inside the folder (minus stubs) are
// caught and run to ensure we don't forget to register new tests.
'tests.mobilefrontend': glob.sync( './tests/node-qunit/*/*.test.js' ),
// mobile.startup.runtime: reserved entry for the Webpack bootloader
// optimization.runtimeChunk. Without a distinct runtime chunk, it's instead bundled into
// each entry which is inefficient. This chunk should only change when Webpack or this
// configuration changes.
'mediawiki.template.hogan': './src/mediawiki.template.hogan/mediawiki.template.hogan.js',
'mobile.startup': './src/mobile.startup/mobile.startup.js'
},
// tests.mobilefrontend has additional dependencies but they're provided externally. This code
// can be removed if tests.mobilefrontend is removed.
externals: [ 'jquery', 'jsdom', 'oojs', 'sinon', 'qunit', 'fs', 'path' ],
optimization: {
// Generate a single Webpack bootstrap chunk for ResourceLoader modules to share.
// This will be packaged inside the mobile.startup module which should be a dependency for
// all modules.
// The inefficient alternative is for each module to bundle its own runtime.
// The terms bootloader and runtime are used interchangeably.
runtimeChunk: { name: 'mobile.startup.runtime' },
// Don't produce production output when a build error occurs.
noEmitOnErrors: prod
},
output: {
// Specify the destination of all build products.
path: distDir,
// Store outputs per module in files named after the modules. For the JavaScript entry
// itself, append .js to each ResourceLoader module entry name. This value is tightly
// coupled to sourceMapFilename.
filename: '[name].js',
// Rename source map extensions. Per T173491 files with a .map extension cannot be served
// from prod.
sourceMapFilename: `[file]${srcMapExt}`,
// Expose the module.exports of each module entry chunk through the global
// mfModules[name].
// This is useful for debugging. E.g., mfModules['mobile.startup'] is set by the
// module.exports of mobile.startup.js.
library: [ 'mfModules', '[name]' ],
libraryTarget: 'this'
},
// Accurate source maps at the expense of build time. The source map is intentionally exposed
// to users via sourceMapFilename for prod debugging. This goes against convention as source
// code is publicly distributed.
devtool: 'source-map',
plugins: [
// Delete the output directory on each build.
new CleanPlugin( distDir, { verbose: false } )
],
performance: {
// Size violations for prod builds fail; development builds are unchecked.
hints: prod ? 'error' : false,
// Minified uncompressed size limits for chunks / assets and entrypoints. Keep these numbers
// up-to-date and rounded to the nearest 10th of a kibibyte so that code sizing costs are
// well understood. Related to bundlesize minified, gzipped compressed file size tests.
// Note: entrypoint size implicitly includes the mobile.startup.runtime entry.
maxAssetSize: 27.8 * 1024,
maxEntrypointSize: 29.3 * 1024,
// The default filter excludes map files but we rename ours. Also, any modules prefixed with
// "tests." are excluded from performance checks as they are not shipped to end users.
assetFilter: ( filename ) => !filename.startsWith( 'tests.' ) &&
!filename.endsWith( srcMapExt )
}
};
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