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// The bundled CSS minimizers (`cssnano@8`, `@swc/css`, `lightningcss`,
// `esbuild@0.28`) require modern Node and don't reliably install on the
// Windows agents. Skip the dedicated CSS test file outright on rows that
// can't run them so we don't end up with stale or missing snapshots.
// `cssnano@8` declares `engines.node` as `^22.11.0 || ^24.11.0 || >=26.0`
// and reaches for `Array.prototype.difference`, which only lands in V8 13.x,
// so anything older throws `trustedFunctions.difference is not a function`
// at minify time rather than failing to install. The `@swc/html` minimizers
// require Node >= 14, so the dedicated swc-html file is skipped on older
// Node for the same reason.
const NODE_MAJOR = Number(process.versions.node.split(".")[0]);
const IS_WINDOWS = process.platform === "win32";
const RUN_CSS_TESTS = NODE_MAJOR >= 22 && !IS_WINDOWS;
const RUN_SWC_HTML_TESTS = NODE_MAJOR >= 14;
// `renderEmbeddedSource` and the `collectEmbeddedSource` / `embeddedSources`
// passes landed in webpack 5.110; the plugin degrades to doing nothing without
// them, so the file covering them is skipped on an older one. Asked of the
// minify function that reads the passes rather than of the version string.
// Deep paths, resolved at call time: they ship from webpack 5.110, and an older
// one has no such file for a static import to resolve.
const WEBPACK_CSS_MINIFY = "webpack/lib/css/cssMinify";
const RUN_EMBEDDED_TESTS = (() => {
try {
return typeof require(WEBPACK_CSS_MINIFY).getEmbeddedTypes === "function";
} catch (_err) {
return false;
}
})();
// The image minimizers reach for packages the legacy rows never get: `sharp`
// ships a native binary that the `--ignore-scripts` installs skip, and
// `imagemin` is ESM-only. Asked of the packages rather than of the version
// string, the same way the embedded-source check is. Named through variables
// so they are resolved at call time rather than by the import linter.
const IMAGE_MINIMIZER_PACKAGES = ["@napi-rs/image", "sharp", "svgo"];
const HAS_IMAGE_MINIMIZER_PACKAGES = IMAGE_MINIMIZER_PACKAGES.every((name) => {
try {
require(name);
return true;
} catch (_err) {
return false;
}
});
// `imagemin` is ESM-only, so anything reaching it goes through an `import()`
// inside a jest VM context. On Node 14 that takes the worker process down with
// a SIGSEGV instead of throwing — with the flag or without it — so the suites
// that reach it run only where `scripts/jest.js` turns VM modules on, which is
// also the first Node `imagemin` itself supports.
const RUN_ESM_IMPORT_TESTS = process.execArgv.includes(
"--experimental-vm-modules",
);
const RUN_IMAGE_TESTS = HAS_IMAGE_MINIMIZER_PACKAGES && RUN_ESM_IMPORT_TESTS;
const testPathIgnorePatterns = [];
if (!RUN_CSS_TESTS) {
testPathIgnorePatterns.push("/test/css-minify-option\\.test\\.js$");
}
if (!RUN_SWC_HTML_TESTS) {
testPathIgnorePatterns.push("/test/swc-html-minify-option\\.test\\.js$");
}
if (!RUN_EMBEDDED_TESTS) {
testPathIgnorePatterns.push("/test/embedded-source\\.test\\.js$");
}
if (!RUN_IMAGE_TESTS) {
testPathIgnorePatterns.push("/test/image-minify-option\\.test\\.js$");
}
if (!RUN_ESM_IMPORT_TESTS) {
testPathIgnorePatterns.push("/test/imagemin-normalize-config\\.test\\.js$");
}
module.exports = {
testEnvironment: "node",
// The default 5s timeout is too tight for slower CI runners (especially
// older Node on macOS), where webpack + multiple minimizers per asset
// routinely take longer than that.
testTimeout: 60000,
coveragePathIgnorePatterns: ["src/serialize-javascript.js"],
snapshotSerializers: ["<rootDir>/test/helpers/snapshotHashSerializer.js"],
testPathIgnorePatterns,
};