93 lines
2.7 KiB
JavaScript
93 lines
2.7 KiB
JavaScript
// src/webpack/context.ts
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import { resolve } from "path";
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import { Buffer } from "buffer";
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import process from "process";
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import sources from "webpack-sources";
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import { Parser } from "acorn";
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function createBuildContext(options, compilation) {
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return {
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parse(code, opts = {}) {
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return Parser.parse(code, {
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sourceType: "module",
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ecmaVersion: "latest",
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locations: true,
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...opts
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});
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},
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addWatchFile(id) {
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options.addWatchFile(resolve(process.cwd(), id));
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},
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emitFile(emittedFile) {
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const outFileName = emittedFile.fileName || emittedFile.name;
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if (emittedFile.source && outFileName) {
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if (!compilation)
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throw new Error("unplugin/webpack: emitFile outside supported hooks (buildStart, buildEnd, load, transform, watchChange)");
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compilation.emitAsset(
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outFileName,
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sources ? new sources.RawSource(
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// @ts-expect-error types mismatch
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typeof emittedFile.source === "string" ? emittedFile.source : Buffer.from(emittedFile.source)
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) : {
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source: () => emittedFile.source,
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size: () => emittedFile.source.length
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}
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);
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}
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},
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getWatchFiles() {
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return options.getWatchFiles();
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}
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};
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}
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function createContext(loader) {
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return {
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error: (error) => loader.emitError(normalizeMessage(error)),
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warn: (message) => loader.emitWarning(normalizeMessage(message))
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};
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}
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function normalizeMessage(error) {
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const err = new Error(typeof error === "string" ? error : error.message);
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if (typeof error === "object") {
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err.stack = error.stack;
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err.cause = error.meta;
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}
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return err;
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}
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// src/webpack/loaders/transform.ts
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async function transform(source, map) {
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const callback = this.async();
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let unpluginName;
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if (typeof this.query === "string") {
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const query = new URLSearchParams(this.query);
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unpluginName = query.get("unpluginName");
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} else {
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unpluginName = this.query.unpluginName;
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}
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const plugin = this._compiler?.$unpluginContext[unpluginName];
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if (!plugin?.transform)
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return callback(null, source, map);
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const context = createContext(this);
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const res = await plugin.transform.call(
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{ ...createBuildContext({
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addWatchFile: (file) => {
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this.addDependency(file);
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},
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getWatchFiles: () => {
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return this.getDependencies();
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}
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}, this._compilation), ...context },
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source,
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this.resource
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);
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if (res == null)
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callback(null, source, map);
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else if (typeof res !== "string")
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callback(null, res.code, map == null ? map : res.map || map);
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else
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callback(null, res, map);
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}
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export {
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transform as default
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};
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