f724ae98a1
This commit converts the pdfjsdev-loader transform into a Babel plugin, to skip a AST->string->AST round-trip. Before this commit, the webpack build process was: 1. Babel parses the code 2. Babel transforms the AST 3. Babel generates the code 4. Acorn parses the code 5. pdfjsdev-loader transforms the AST 6. @javascript-obfuscator/escodegen generates the code 7. Webpack parses the file 8. Webpack concatenates the files After this commit, it is reduced to: 1. Babel parses the code 2. Babel transforms the AST 3. babel-plugin-pdfjs-preprocessor transforms the AST 4. Babel generates the code 5. Webpack parses the file 6. Webpack concatenates the files This change improves the build time by ~25% (tested on MacBook Air M2): - `gulp lib`: 3.4s to 2.6s - `gulp dist`: 36s to 29s - `gulp generic`: 5.5s to 4.0s - `gulp mozcentral`: 4.7s to 3.2s The new Babel plugin doesn't support the `saveComments` option of pdfjsdev-loader, and it just always discards comments. Even though pdfjsdev-loader supported multiple values for that option, it was effectively ignored due to `acorn` dropping comments by default.
70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
import * as builder from "./builder.mjs";
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import { fileURLToPath } from "url";
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import fs from "fs";
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import path from "path";
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const __dirname = path.dirname(fileURLToPath(import.meta.url));
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let errors = 0;
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const baseDir = path.join(__dirname, "fixtures");
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const files = fs
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.readdirSync(baseDir)
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.filter(function (name) {
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return /-expected\./.test(name);
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})
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.map(function (name) {
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return path.join(baseDir, name);
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});
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files.forEach(function (expectationFilename) {
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const inFilename = expectationFilename.replace("-expected", "");
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const expectation = fs
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.readFileSync(expectationFilename)
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.toString()
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.trim()
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.replaceAll("__filename", fs.realpathSync(inFilename));
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const outLines = [];
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const outFilename = function (line) {
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outLines.push(line);
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};
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const defines = {
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TRUE: true,
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FALSE: false,
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};
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let out;
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try {
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builder.preprocess(inFilename, outFilename, defines);
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out = outLines.join("\n").trim();
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} catch (e) {
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out = ("Error: " + e.message).replaceAll(/^/gm, "//");
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}
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if (out !== expectation) {
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errors++;
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// Allow regenerating the expected output using
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// OVERWRITE=true node ./external/builder/test-fixtures.mjs
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if (process.env.OVERWRITE) {
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fs.writeFileSync(expectationFilename, out + "\n");
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}
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console.log("Assertion failed for " + inFilename);
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console.log("--------------------------------------------------");
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console.log("EXPECTED:");
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console.log(expectation);
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console.log("--------------------------------------------------");
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console.log("ACTUAL");
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console.log(out);
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console.log("--------------------------------------------------");
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console.log();
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}
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});
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if (errors) {
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console.error("Found " + errors + " expectation failures.");
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process.exit(1);
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} else {
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console.log("All tests completed without errors.");
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process.exit(0);
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}
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