@jsenv/file-size-impact/src/internal/apply_tracking_config.js

Add files size impact into pull requests

import { collectDirectoryMatchReport } from "@jsenv/filesystem";
import { urlToFileSystemPath } from "@jsenv/urls";

export const applyTrackingConfig = async (
  trackingConfig,
  { rootDirectoryUrl, manifestConfig },
) => {
  const result = {};
  const trackingNames = Object.keys(trackingConfig);
  // ensure keys order is the same as trackingConfig (despite Promise.all below)
  trackingNames.forEach((trackingName) => {
    result[trackingName] = null;
  });
  await Promise.all(
    trackingNames.map(async (trackingName) => {
      const tracking = trackingConfig[trackingName];
      const groupTrackingResult = await applyTracking(tracking, {
        rootDirectoryUrl,
        manifestConfig,
      });
      result[trackingName] = groupTrackingResult;
    }),
  );
  return result;
};

const applyTracking = async (
  tracking,
  { rootDirectoryUrl, manifestConfig },
) => {
  let directoryMatchReport;
  try {
    directoryMatchReport = await collectDirectoryMatchReport({
      directoryUrl: rootDirectoryUrl,
      associations: {
        track: tracking,
        ...(manifestConfig ? { manifest: manifestConfig } : {}),
      },
      predicate: (meta) => Boolean(meta.track) || Boolean(meta.manifest),
    });
  } catch (e) {
    const directoryPath = urlToFileSystemPath(rootDirectoryUrl);
    if (e.code === "ENOENT" && e.path === directoryPath) {
      console.warn(`${directoryPath} does not exists`);
      return [];
    }
    throw e;
  }

  const { matchingArray, ignoredArray } = directoryMatchReport;

  const trackedMetaMap = {};
  const ignoredMetaMap = {};
  const manifestMetaMap = {};
  ignoredArray.forEach(({ relativeUrl }) => {
    ignoredMetaMap[relativeUrl] = null;
  });
  matchingArray.forEach(({ relativeUrl, meta }) => {
    if (meta.manifest) {
      manifestMetaMap[relativeUrl] = meta.manifest;
    } else {
      trackedMetaMap[relativeUrl] = meta.track;
    }
  });

  return {
    trackedMetaMap,
    ignoredMetaMap,
    manifestMetaMap,
  };
};