chore: move to monorepo (#1297)

* chore: move to monorepo

* lint all js file

* simplify circleCI

* fix failing tests

* fix tests due to folder rename

* fix test since v1 website is renamed

packages/docusaurus-1.x/lib/core/utils.js

@@ -0,0 +1,122 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+const shell = require('shelljs');
+
+const TRUNCATE_MARKER = /<!--\s*truncate\s*-->/;
+
+function blogPostHasTruncateMarker(content) {
+  return TRUNCATE_MARKER.test(content);
+}
+
+function extractBlogPostBeforeTruncate(content) {
+  return content.split(TRUNCATE_MARKER)[0];
+}
+
+function removeExtension(pathStr) {
+  return pathStr.replace(/\.[^/.]+$/, '');
+}
+
+function getPath(pathStr, cleanUrl = false) {
+  if (!pathStr || !cleanUrl || !pathStr.endsWith('.html')) {
+    return pathStr;
+  }
+  return pathStr.endsWith('/index.html')
+    ? pathStr.replace(/index\.html$/, '')
+    : removeExtension(pathStr);
+}
+
+function idx(target, keyPaths) {
+  return (
+    target &&
+    (Array.isArray(keyPaths)
+      ? keyPaths.reduce((obj, key) => obj && obj[key], target)
+      : target[keyPaths])
+  );
+}
+
+function getGitLastUpdated(filepath) {
+  const timestampAndAuthorRegex = /^(\d+), (.+)$/;
+
+  function isTimestampAndAuthor(str) {
+    return timestampAndAuthorRegex.test(str);
+  }
+
+  function getTimestampAndAuthor(str) {
+    if (!str) {
+      return null;
+    }
+
+    const temp = str.match(timestampAndAuthorRegex);
+    return !temp || temp.length < 3
+      ? null
+      : {timestamp: temp[1], author: temp[2]};
+  }
+
+  // Wrap in try/catch in case the shell commands fail (e.g. project doesn't use Git, etc).
+  try {
+    // To differentiate between content change and file renaming / moving, use --summary
+    // To follow the file history until before it is moved (when we create new version), use
+    // --follow.
+    const silentState = shell.config.silent; // Save old silent state.
+    shell.config.silent = true;
+    const result = shell
+      .exec(`git log --follow --summary --format="%ct, %an" ${filepath}`)
+      .stdout.trim();
+    shell.config.silent = silentState;
+
+    // Format the log results to be
+    // ['1234567890, Yangshun Tay', 'rename ...', '1234567880,
+    //  'Joel Marcey', 'move ...', '1234567870', '1234567860']
+    const records = result
+      .toString('utf-8')
+      .replace(/\n\s*\n/g, '\n')
+      .split('\n')
+      .filter(String);
+    const lastContentModifierCommit = records.find((item, index, arr) => {
+      const currentItemIsTimestampAndAuthor = isTimestampAndAuthor(item);
+      const isLastTwoItem = index + 2 >= arr.length;
+      const nextItemIsTimestampAndAuthor = isTimestampAndAuthor(arr[index + 1]);
+      return (
+        currentItemIsTimestampAndAuthor &&
+        (isLastTwoItem || nextItemIsTimestampAndAuthor)
+      );
+    });
+
+    return lastContentModifierCommit
+      ? getTimestampAndAuthor(lastContentModifierCommit)
+      : null;
+  } catch (error) {
+    console.error(error);
+  }
+  return null;
+}
+
+function getGitLastUpdatedTime(filepath) {
+  const commit = getGitLastUpdated(filepath);
+
+  if (commit && commit.timestamp) {
+    const date = new Date(parseInt(commit.timestamp, 10) * 1000);
+    return date.toLocaleDateString();
+  }
+
+  return null;
+}
+
+function getGitLastUpdatedBy(filepath) {
+  const commit = getGitLastUpdated(filepath);
+  return commit ? commit.author : null;
+}
+
+module.exports = {
+  blogPostHasTruncateMarker,
+  extractBlogPostBeforeTruncate,
+  getGitLastUpdatedTime,
+  getGitLastUpdatedBy,
+  getPath,
+  removeExtension,
+  idx,
+};