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Split functions into smaller functions

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This commit is contained in:
RMidhunSuresh 2022-06-20 21:10:11 +05:30
parent 5eec724712
commit fbdd512e06
1 changed files with 49 additions and 15 deletions
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64
scripts/build-plugins/rollup-plugin-build-themes.js
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@ -43,10 +43,39 @@ function addThemesToConfig(bundle, manifestLocations, defaultThemes) {
}
}
function parseBundle(bundle) {
/**
* Returns a mapping from location (of manifest file) to an array containing all the chunks (of css files) generated from that location.
* To understand what chunk means in this context, see https://rollupjs.org/guide/en/#generatebundle.
* @param {*} bundle Mapping from fileName to AssetInfo | ChunkInfo
*/
function getMappingFromLocationToChunkArray(bundle) {
const chunkMap = new Map();
for (const [fileName, info] of Object.entries(bundle)) {
if (!fileName.endsWith(".css") || info.type === "asset" || info.facadeModuleId?.includes("type=runtime")) {
continue;
}
const location = info.facadeModuleId?.match(/(.+)\/.+\.css/)?.[1];
if (!location) {
throw new Error("Cannot find location of css chunk!");
}
const array = chunkMap.get(location);
if (!array) {
chunkMap.set(location, [info]);
}
else {
array.push(info);
}
}
return chunkMap;
}
/**
* Returns a mapping from unhashed file name (of css files) to AssetInfo.
* To understand what AssetInfo means in this context, see https://rollupjs.org/guide/en/#generatebundle.
* @param {*} bundle Mapping from fileName to AssetInfo | ChunkInfo
*/
function getMappingFromFileNameToAssetInfo(bundle) {
const assetMap = new Map();
let runtimeThemeChunkMap = new Map();
for (const [fileName, info] of Object.entries(bundle)) {
if (!fileName.endsWith(".css")) {
continue;
@ -58,6 +87,20 @@ function parseBundle(bundle) {
* searching through the bundle array later.
*/
assetMap.set(info.name, info);
}
}
return assetMap;
}
/**
* Returns a mapping from location (of manifest file) to ChunkInfo of the runtime css asset
* To understand what ChunkInfo means in this context, see https://rollupjs.org/guide/en/#generatebundle.
* @param {*} bundle Mapping from fileName to AssetInfo | ChunkInfo
*/
function getMappingFromLocationToRuntimeChunk(bundle) {
let runtimeThemeChunkMap = new Map();
for (const [fileName, info] of Object.entries(bundle)) {
if (!fileName.endsWith(".css") || info.type === "asset") {
continue;
}
const location = info.facadeModuleId?.match(/(.+)\/.+\.css/)?.[1];
@ -70,17 +113,9 @@ function parseBundle(bundle) {
* so store this separately.
*/
runtimeThemeChunkMap.set(location, info);
continue;
}
const array = chunkMap.get(location);
if (!array) {
chunkMap.set(location, [info]);
}
else {
array.push(info);
}
}
return { chunkMap, assetMap, runtimeThemeChunkMap };
return runtimeThemeChunkMap;
}
module.exports = function buildThemes(options) {
@ -246,10 +281,9 @@ module.exports = function buildThemes(options) {
},
generateBundle(_, bundle) {
// assetMap: Mapping from asset-name (eg: element-dark.css) to AssetInfo
// chunkMap: Mapping from theme-location (eg: hydrogen-web/src/.../css/themes/element) to a list of ChunkInfo
// types of AssetInfo and ChunkInfo can be found at https://rollupjs.org/guide/en/#generatebundle
const { assetMap, chunkMap, runtimeThemeChunkMap } = parseBundle(bundle);
const assetMap = getMappingFromFileNameToAssetInfo(bundle);
const chunkMap = getMappingFromLocationToChunkArray(bundle);
const runtimeThemeChunkMap = getMappingFromLocationToRuntimeChunk(bundle);
const manifestLocations = [];
// Location of the directory containing manifest relative to the root of the build output
const manifestLocation = "assets";