1#!/usr/bin/env node --redirect-warnings=/dev/null
2
3const { execFileSync } = require("child_process");
4let { GITHUB_ACCESS_TOKEN } = process.env;
5const FIXES_REGEX = /(fixes|closes|completes) (.+[/#]\d+.*)$/im;
6
7main();
8
9async function main() {
10 // Get the last two preview tags
11 const [newTag, oldTag] = execFileSync(
12 "git",
13 ["tag", "--sort", "-committerdate"],
14 { encoding: "utf8" },
15 )
16 .split("\n")
17 .filter((t) => t.startsWith("v") && t.endsWith("-pre"));
18
19 // Print the previous release
20 console.log(`Changes from ${oldTag} to ${newTag}\n`);
21
22 if (!GITHUB_ACCESS_TOKEN) {
23 try {
24 GITHUB_ACCESS_TOKEN = execFileSync("gh", ["auth", "token"]).toString();
25 } catch (error) {
26 console.log(error);
27 console.log("No GITHUB_ACCESS_TOKEN, and no `gh auth token`");
28 process.exit(1);
29 }
30 }
31
32 // Get the PRs merged between those two tags.
33 const pullRequestNumbers = getPullRequestNumbers(oldTag, newTag);
34
35 // Get the PRs that were cherry-picked between main and the old tag.
36 const existingPullRequestNumbers = new Set(
37 getPullRequestNumbers("main", oldTag),
38 );
39
40 // Filter out those existing PRs from the set of new PRs.
41 const newPullRequestNumbers = pullRequestNumbers.filter(
42 (number) => !existingPullRequestNumbers.has(number),
43 );
44
45 // Fetch the pull requests from the GitHub API.
46 console.log("Merged Pull requests:");
47 for (const pullRequestNumber of newPullRequestNumbers) {
48 const webURL = `https://github.com/zed-industries/zed/pull/${pullRequestNumber}`;
49 const apiURL = `https://api.github.com/repos/zed-industries/zed/pulls/${pullRequestNumber}`;
50
51 const response = await fetch(apiURL, {
52 headers: {
53 Authorization: `token ${GITHUB_ACCESS_TOKEN}`,
54 },
55 });
56
57 // Print the pull request title and URL.
58 const pullRequest = await response.json();
59 const releaseNotesHeader = /^\s*Release Notes:(.+)/ims;
60
61 let releaseNotes = pullRequest.body || "";
62 const captures = releaseNotesHeader.exec(releaseNotes);
63 const notes = captures ? captures[1] : "MISSING";
64 const skippableNoteRegex = /^\s*-?\s*n\/?a\s*/ims;
65
66 if (skippableNoteRegex.exec(notes) != null) {
67 continue;
68 }
69 console.log("*", pullRequest.title);
70 console.log(" PR URL: ", webURL);
71
72 // If the pull request contains a 'closes' line, print the closed issue.
73 const fixesMatch = (pullRequest.body || "").match(FIXES_REGEX);
74 if (fixesMatch) {
75 const fixedIssueURL = fixesMatch[2];
76 console.log(" Issue URL: ", fixedIssueURL);
77 }
78
79 releaseNotes = notes.trim().split("\n");
80 console.log(" Release Notes:");
81
82 for (const line of releaseNotes) {
83 console.log(` ${line}`);
84 }
85
86 console.log();
87 }
88}
89
90function getPullRequestNumbers(oldTag, newTag) {
91 const pullRequestNumbers = execFileSync(
92 "git",
93 ["log", `${oldTag}..${newTag}`, "--oneline"],
94 { encoding: "utf8" },
95 )
96 .split("\n")
97 .filter((line) => line.length > 0)
98 .map((line) => {
99 const match = line.match(/#(\d+)/);
100 return match ? match[1] : null;
101 })
102 .filter((line) => line);
103
104 return pullRequestNumbers;
105}