89 lines
2.1 KiB
JavaScript
89 lines
2.1 KiB
JavaScript
const writeFile = require('fs').writeFileSync;
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const tempy = require('tempy');
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function updateWatchfile(watchfile) {
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writeFile(watchfile, '' + Date.now());
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}
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function entryManifest() {
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let manifest = null;
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const watchfile = tempy.file();
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updateWatchfile(watchfile);
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return {
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/**
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* A Rollup plugin that populates the entry manifest. This should be
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* used in the client bundle where the code-splitting is taking place.
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*/
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record(options = {}) {
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const publicPath = (options.publicPath || '/').replace(/\/*$/, '/');
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return {
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name: 'entry-manifest-record',
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buildStart() {
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manifest = {};
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},
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generateBundle(options, bundle) {
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Object.keys(bundle).forEach(fileName => {
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const info = bundle[fileName];
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// We're only interested in entry points.
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if (!info.isEntry) return;
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const globalImports = info.imports.filter(
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name => options.globals && options.globals[name]
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);
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let entryPoints = manifest[info.name];
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if (!entryPoints) {
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entryPoints = manifest[info.name] = [];
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}
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entryPoints.push({
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format: options.format,
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globalImports: globalImports,
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url: publicPath + fileName
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});
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});
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updateWatchfile(watchfile);
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}
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};
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},
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/**
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* A Rollup plugin that provides the current entry manifest via a
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* virtual module id.
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*/
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inject(options = {}) {
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const virtualId = options.virtualId || 'entry-manifest';
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return {
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name: 'entry-manifest-inject',
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resolveId(id) {
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if (id === virtualId) {
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return id;
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}
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return null;
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},
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load(id) {
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if (id === virtualId) {
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return 'export default ' + JSON.stringify(manifest);
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}
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return null;
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},
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transform(code, id) {
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if (id === virtualId) {
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this.addWatchFile(watchfile);
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}
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return null;
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}
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};
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}
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};
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}
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module.exports = entryManifest;
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