normalize.js

const path = require('node:path');

const CURRENT_CWD = process.cwd();
const ROOT = path.resolve(__dirname, '../../');

const RSPACK = path.dirname(require.resolve('@rspack/core/package.json'));

const normalize = (str) => {
  let normalizedStr = str.replace(/(\\)+/g, '/');

  normalizedStr = normalizedStr
    .split(RSPACK.replace(/(\\)+/g, '/'))
    .join('<rspack>');

  normalizedStr = normalizedStr
    .split(ROOT.replace(/(\\)+/g, '/'))
    .join('<root>');

  normalizedStr = normalizedStr
    .split(CURRENT_CWD.replace(/(\\)+/g, '/'))
    .join('<cwd>');

  normalizedStr = normalizedStr.replace(/:\d+:\d+/g, ':<line>:<row>');
  normalizedStr = normalizedStr.replace(
    /@@ -\d+,\d+ \+\d+,\d+ @@/g,
    '@@ ... @@',
  );
  return normalizedStr;
};

expect.addSnapshotSerializer({
  test(value) {
    return typeof value === 'string';
  },
  print(received) {
    return normalize(received);
  },
});