48 lines
1.8 KiB
JavaScript
48 lines
1.8 KiB
JavaScript
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import { a as normalizeObjectHook, i as unescapeResourcePath } from "../../webpack-like-BSTzHRun.mjs";
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import { n as createBuildContext, r as createContext } from "../../context-VOLsP74b.mjs";
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import { t as mergeSourceMaps } from "../../sourcemap-BGvAAfVS.mjs";
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// src/webpack/loaders/transform.ts
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const filters = /* @__PURE__ */ new WeakMap();
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const raw = true;
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async function transform(source, map) {
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const callback = this.async();
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const { plugin } = this.query;
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if (!plugin?.transform) return callback(null, source, map);
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const id = unescapeResourcePath(this.resource, "webpack");
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const context = createContext(this);
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const hook = plugin.transform;
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const cwd = process.cwd();
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let cached = filters.get(hook);
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let handler;
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if (cached?.cwd === cwd) handler = typeof hook === "function" ? hook : hook.handler;
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else {
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const normalized = normalizeObjectHook("transform", hook);
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handler = normalized.handler;
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cached = {
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cwd,
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filter: normalized.filter
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};
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filters.set(hook, cached);
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}
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const { filter } = cached;
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const code = typeof source === "string" ? source : source.toString("utf-8");
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if (!filter(id, code)) return callback(null, source, map);
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try {
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const res = await handler.call(Object.assign({}, 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._compiler, this._compilation, this, map), context), code, id);
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if (res == null) callback(null, source, map);
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else if (typeof res !== "string") callback(null, res.code, this.sourceMap === false ? map : mergeSourceMaps(res.map, map, id));
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else callback(null, res, map);
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} catch (error) {
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if (error instanceof Error) callback(error);
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else callback(new Error(String(error)));
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}
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}
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export { transform as default, raw };
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