angular-cn/dev-infra/benchmark/ng_rollup_bundle/rollup.config-tmpl.js

90 lines
3.1 KiB
JavaScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
// Rollup configuration
// GENERATED BY Bazel
const buildOptimizer =
require('@angular-devkit/build-optimizer/src/build-optimizer/rollup-plugin.js');
const nodeResolve = require('rollup-plugin-node-resolve');
const sourcemaps = require('rollup-plugin-sourcemaps');
const commonjs = require('rollup-plugin-commonjs');
const path = require('path');
const fs = require('fs');
function log_verbose(...m) {
// This is a template file so we use __filename to output the actual filename
if (!!process.env['VERBOSE_LOGS']) console.error(`[${path.basename(__filename)}]`, ...m);
}
// Substitutions from the `ng_rollup_bundle` macro. We want to conditionally toggle
// build optimizer, support optional banner files, and generally respect the current
// compilation mode (i.e. Ivy or View Engine) as that affects module resolution.
const useBuildOptimizer = TMPL_build_optimizer;
const bannerFile = TMPL_banner_file;
const ivyEnabled = 'TMPL_angular_ivy_enabled' === 'True';
// `bazel_version_file` is a substitution that is applied by `@bazel/rollup`.
const stampDataFile = bazel_version_file;
log_verbose(`running with
cwd: ${process.cwd()}
useBuildOptimizer: ${useBuildOptimizer}
bannerFile: ${bannerFile}
stampDataFile: ${stampDataFile}
ivyEnabled: ${ivyEnabled}
`);
const plugins = [
nodeResolve({
// If Ivy is enabled, we need to make sure that the module resolution prioritizes ngcc
// processed entry-point fields. Ngcc adds special fields to `package.json` files of
// modules that have been processed. Prioritizing these fields matches the Angular CLIs
// behavior for supporting Ivy. We need to support ngcc because `ng_rollup_bundle` rule is
// shared with other repositories that consume Angular from NPM (w/ ngcc).
// https://github.com/angular/angular-cli/blob/1a1ceb609b9a87c4021cce3a6f0fc6d167cd09d2/packages/ngtools/webpack/src/angular_compiler_plugin.ts#L918-L920
mainFields: ivyEnabled ? ['module_ivy_ngcc', 'main_ivy_ngcc', 'module', 'main'] :
['module', 'main'],
}),
commonjs({ignoreGlobal: true}),
sourcemaps(),
];
if (useBuildOptimizer) {
plugins.unshift(buildOptimizer.default({
sideEffectFreeModules: [],
}));
}
module.exports = {
plugins,
external: [TMPL_external],
output: {
globals: {TMPL_globals},
banner: extractBannerIfConfigured(),
}
};
/** Extracts the top-level bundle banner if specified. */
function extractBannerIfConfigured() {
if (!bannerFile) {
return undefined;
}
let banner = fs.readFileSync(bannerFile, 'utf8');
if (stampDataFile) {
const versionTag = fs.readFileSync(stampDataFile, 'utf8')
.split('\n')
.find(s => s.startsWith('BUILD_SCM_VERSION'));
// Don't assume BUILD_SCM_VERSION exists
if (versionTag) {
const version = versionTag.split(' ')[1].trim();
banner = banner.replace(/0.0.0-PLACEHOLDER/, version);
}
}
return banner;
}