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// Contains utility functions for various scripts, including:
// CI, running tests, and code generation.
import { spawn as nodeSpawn, spawnSync as nodeSpawnSync } from "node:child_process";
import { createHash } from "node:crypto";
import {
appendFileSync,
chmodSync,
copyFileSync,
existsSync,
mkdirSync,
mkdtempSync,
readdirSync,
readFileSync,
writeFileSync,
} from "node:fs";
import { connect } from "node:net";
import { hostname, homedir as nodeHomedir, tmpdir as nodeTmpdir, release, userInfo } from "node:os";
import { basename, dirname, join, relative, resolve } from "node:path";
import { normalize as normalizeWindows } from "node:path/win32";
export const isWindows = process.platform === "win32";
export const isMacOS = process.platform === "darwin";
export const isLinux = process.platform === "linux";
export const isPosix = isMacOS || isLinux;
export const isArm64 = process.arch === "arm64";
export const isX64 = process.arch === "x64";
/**
* @param {string} name
* @param {boolean} [required]
* @returns {string}
*/
export function getEnv(name, required = true) {
const value = process.env[name];
if (required && !value) {
throw new Error(`Environment variable is missing: ${name}`);
}
return value;
}
export const isBuildkite = getEnv("BUILDKITE", false) === "true";
export const isGithubAction = getEnv("GITHUB_ACTIONS", false) === "true";
export const isCI = getEnv("CI", false) === "true" || isBuildkite || isGithubAction;
export const isDebug = getEnv("DEBUG", false) === "1";
/**
* @param {string} name
* @param {object} [options]
* @param {boolean} [options.required]
* @param {boolean} [options.redact]
* @returns {string}
*/
export function getSecret(name, options = { required: true, redact: true }) {
const value = getEnv(name, false);
if (value) {
return value;
}
if (isBuildkite) {
const command = ["buildkite-agent", "secret", "get", name];
if (options["redact"] === false) {
command.push("--skip-redaction");
}
const { error, stdout } = spawnSync(command);
const secret = stdout.trim();
if (error || !secret) {
const orgId = getEnv("BUILDKITE_ORGANIZATION_SLUG", false);
const clusterId = getEnv("BUILDKITE_CLUSTER_ID", false);
let hint;
if (orgId && clusterId) {
hint = `https://buildkite.com/organizations/${orgId}/clusters/${clusterId}/secrets`;
} else {
hint = "https://buildkite.com/docs/pipelines/buildkite-secrets";
}
throw new Error(`Secret not found: ${name} (hint: go to ${hint} and create a secret)`, { cause: error });
}
setEnv(name, secret);
return secret;
}
return getEnv(name, options["required"]);
}
/**
* @param {...unknown} args
*/
export function debugLog(...args) {
if (isDebug) {
console.log(...args);
}
}
/**
* @param {string} name
* @param {string | undefined} value
*/
export function setEnv(name, value) {
process.env[name] = value;
if (isGithubAction && !/^GITHUB_/i.test(name)) {
const envFilePath = process.env["GITHUB_ENV"];
if (envFilePath) {
const delimeter = Math.random().toString(36).substring(2, 15);
const content = `${name}<<${delimeter}\n${value}\n${delimeter}\n`;
appendFileSync(outputPath, content);
}
}
}
/**
* @typedef {object} SpawnOptions
* @property {string} [cwd]
* @property {number} [timeout]
* @property {Record<string, string | undefined>} [env]
* @property {boolean | ((error: Error) => boolean)} [throwOnError]
* @property {(error: Error) => boolean} [retryOnError]
* @property {string} [stdin]
* @property {boolean} [privileged]
*/
/**
* @typedef {object} SpawnResult
* @property {number} exitCode
* @property {number} [signalCode]
* @property {string} stdout
* @property {string} stderr
* @property {Error} [error]
*/
/**
* @param {TemplateStringsArray} strings
* @param {...any} values
* @returns {string[]}
*/
export function $(strings, ...values) {
const result = [];
for (let i = 0; i < strings.length; i++) {
result.push(...strings[i].trim().split(/\s+/).filter(Boolean));
if (i < values.length) {
const value = values[i];
if (Array.isArray(value)) {
result.push(...value);
} else if (typeof value === "string") {
if (result.at(-1)?.endsWith("=")) {
result[result.length - 1] += value;
} else {
result.push(value);
}
}
}
}
return result;
}
/**
* @param {string[]} command
* @param {SpawnOptions} options
*/
function parseCommand(command, options) {
if (options?.privileged) {
return [...getPrivilegedCommand(), ...command];
}
return command;
}
/** @type {string[] | undefined} */
let priviledgedCommand;
/**
* @returns {string[]}
*/
function getPrivilegedCommand() {
if (typeof priviledgedCommand !== "undefined") {
return priviledgedCommand;
}
if (isWindows) {
return (priviledgedCommand = []);
}
const sudo = ["sudo", "-n"];
const { error: sudoError } = spawnSync([...sudo, "true"]);
if (!sudoError) {
return (priviledgedCommand = sudo);
}
const su = ["su", "-s", "sh", "root", "-c"];
const { error: suError } = spawnSync([...su, "true"]);
if (!suError) {
return (priviledgedCommand = su);
}
const doas = ["doas", "-u", "root"];
const { error: doasError } = spawnSync([...doas, "true"]);
if (!doasError) {
return (priviledgedCommand = doas);
}
return (priviledgedCommand = []);
}
/** @type {boolean | undefined} */
let privileged;
/**
* @returns {boolean}
*/
export function isPrivileged() {
if (typeof privileged !== "undefined") {
return privileged;
}
const command = getPrivilegedCommand();
if (command.length) {
const { error } = spawnSync(command);
privileged = !error;
} else {
privileged = false;
}
return privileged;
}
/**
* @param {string[]} command
* @param {SpawnOptions} options
* @returns {Promise<SpawnResult>}
*/
export async function spawn(command, options = {}) {
const [cmd, ...args] = parseCommand(command, options);
debugLog("$", cmd, ...args);
const stdin = options["stdin"];
const spawnOptions = {
cwd: options["cwd"] ?? process.cwd(),
timeout: options["timeout"] ?? undefined,
env: options["env"] ?? undefined,
stdio: stdin === "inherit" ? "inherit" : [stdin ? "pipe" : "ignore", "pipe", "pipe"],
...options,
};
let exitCode = 1;
let signalCode;
let stdout = "";
let stderr = "";
let error;
const result = new Promise((resolve, reject) => {
const subprocess = nodeSpawn(cmd, args, spawnOptions);
if (typeof stdin !== "undefined") {
subprocess.stdin?.on("error", error => {
if (error.code !== "EPIPE") {
reject(error);
}
});
subprocess.stdin?.write(stdin);
subprocess.stdin?.end();
}
subprocess.stdout?.on("data", chunk => {
stdout += chunk;
});
subprocess.stderr?.on("data", chunk => {
stderr += chunk;
});
subprocess.on("error", error => reject(error));
subprocess.on("exit", (code, signal) => {
exitCode = code;
signalCode = signal;
resolve();
});
});
try {
await result;
} catch (cause) {
error = cause;
}
if (exitCode !== 0 && isWindows) {
const exitReason = getWindowsExitReason(exitCode);
if (exitReason) {
signalCode = exitReason;
}
}
if (error || signalCode || exitCode !== 0) {
const description = command.map(arg => (arg.includes(" ") ? `"${arg.replace(/"/g, '\\"')}"` : arg)).join(" ");
const cause = error || stderr.trim() || stdout.trim() || undefined;
if (signalCode) {
error = new Error(`Command killed with ${signalCode}: ${description}`, { cause });
} else {
error = new Error(`Command exited with code ${exitCode}: ${description}`, { cause });
}
}
if (error) {
const retryOnError = options["retryOnError"];
if (typeof retryOnError === "function") {
if (retryOnError(error)) {
return spawn(command, options);
}
}
const throwOnError = options["throwOnError"];
if (typeof throwOnError === "function") {
if (throwOnError(error)) {
throw error;
}
} else if (throwOnError) {
throw error;
}
}
return {
exitCode,
signalCode,
stdout,
stderr,
error,
};
}
/**
* @param {string[]} command
* @param {SpawnOptions} options
* @returns {Promise<SpawnResult>}
*/
export async function spawnSafe(command, options = {}) {
return spawn(command, { throwOnError: true, ...options });
}
/**
* @param {string[]} command
* @param {SpawnOptions} options
* @returns {SpawnResult}
*/
export function spawnSync(command, options = {}) {
const [cmd, ...args] = parseCommand(command, options);
debugLog("$", cmd, ...args);
const stdin = options["stdin"];
const spawnOptions = {
cwd: options["cwd"] ?? process.cwd(),
timeout: options["timeout"] ?? undefined,
env: options["env"] ?? undefined,
stdio: stdin === "inherit" ? "inherit" : [typeof stdin === "undefined" ? "ignore" : "pipe", "pipe", "pipe"],
input: stdin,
...options,
};
let exitCode = 1;
let signalCode;
let stdout = "";
let stderr = "";
let error;
let result;
try {
result = nodeSpawnSync(cmd, args, spawnOptions);
} catch (error) {
result = { error };
}
const { error: spawnError, status, signal, stdout: stdoutBuffer, stderr: stderrBuffer } = result;
if (spawnError) {
error = spawnError;
} else {
exitCode = status ?? 1;
signalCode = signal || undefined;
stdout = stdoutBuffer?.toString?.() ?? "";
stderr = stderrBuffer?.toString?.() ?? "";
}
if (exitCode !== 0 && isWindows) {
const exitReason = getWindowsExitReason(exitCode);
if (exitReason) {
signalCode = exitReason;
}
}
if (error || signalCode || exitCode !== 0) {
const description = command.map(arg => (arg.includes(" ") ? `"${arg.replace(/"/g, '\\"')}"` : arg)).join(" ");
const cause = error || stderr?.trim() || stdout?.trim() || undefined;
if (signalCode) {
error = new Error(`Command killed with ${signalCode}: ${description}`, { cause });
} else {
error = new Error(`Command exited with code ${exitCode}: ${description}`, { cause });
}
}
if (error) {
const retryOnError = options["retryOnError"];
if (typeof retryOnError === "function") {
if (retryOnError(error)) {
return spawn(command, options);
}
}
const throwOnError = options["throwOnError"];
if (typeof throwOnError === "function") {
if (throwOnError(error)) {
throw error;
}
} else if (throwOnError) {
throw error;
}
}
return {
exitCode,
signalCode,
stdout,
stderr,
error,
};
}
/**
* @param {string[]} command
* @param {SpawnOptions} options
* @returns {SpawnResult}
*/
export function spawnSyncSafe(command, options = {}) {
return spawnSync(command, { throwOnError: true, ...options });
}
/**
* @param {number} exitCode
* @returns {string | undefined}
*/
export function getWindowsExitReason(exitCode) {
const windowsKitPath = "C:\\Program Files (x86)\\Windows Kits";
if (!existsSync(windowsKitPath)) {
return;
}
const windowsKitPaths = readdirSync(windowsKitPath)
.filter(filename => isFinite(parseInt(filename)))
.sort((a, b) => parseInt(b) - parseInt(a));
let ntStatusPath;
for (const windowsKitPath of windowsKitPaths) {
const includePath = `${windowsKitPath}\\Include`;
if (!existsSync(includePath)) {
continue;
}
const windowsSdkPaths = readdirSync(includePath).sort();
for (const windowsSdkPath of windowsSdkPaths) {
const statusPath = `${includePath}\\${windowsSdkPath}\\shared\\ntstatus.h`;
if (existsSync(statusPath)) {
ntStatusPath = statusPath;
break;
}
}
}
if (!ntStatusPath) {
return;
}
const nthStatus = readFile(ntStatusPath, { cache: true });
const match = nthStatus.match(new RegExp(`(STATUS_\\w+).*0x${exitCode?.toString(16)}`, "i"));
if (match) {
const [, exitReason] = match;
return exitReason;
}
}
/**
* @param {string | URL} url
* @returns {URL | undefined}
*/
export function parseGitUrl(url) {
const string = typeof url === "string" ? url : url.toString();
const githubUrl = getEnv("GITHUB_SERVER_URL", false) || "https://github.com";
if (/^git@github\.com:/.test(string)) {
return new URL(string.slice(15).replace(/\.git$/, ""), githubUrl);
}
if (/^https:\/\/github\.com\//.test(string)) {
return new URL(string.slice(19).replace(/\.git$/, ""), githubUrl);
}
}
/**
* @param {string | URL} url
* @returns {string | undefined}
*/
export function parseGitRepository(url) {
const parsed = parseGitUrl(url);
if (parsed) {
const { hostname, pathname } = parsed;
if (hostname == "github.com") {
return pathname.slice(1);
}
}
}
/**
* @param {string} [cwd]
* @returns {URL | undefined}
*/
export function getRepositoryUrl(cwd) {
if (!cwd) {
if (isBuildkite) {
const repository = getEnv("BUILDKITE_REPO", false);
if (repository) {
return parseGitUrl(repository);
}
}
if (isGithubAction) {
const serverUrl = getEnv("GITHUB_SERVER_URL", false) || "https://github.com";
const repository = getEnv("GITHUB_REPOSITORY", false);
if (serverUrl && repository) {
return parseGitUrl(new URL(repository, serverUrl));
}
}
}
const { error, stdout } = spawnSync(["git", "remote", "get-url", "origin"], { cwd });
if (!error) {
return parseGitUrl(stdout.trim());
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getRepository(cwd) {
if (!cwd) {
if (isGithubAction) {
const repository = getEnv("GITHUB_REPOSITORY", false);
if (repository) {
return repository;
}
}
}
const url = getRepositoryUrl(cwd);
if (url) {
return parseGitRepository(url);
}
}
/**
* @returns {string | undefined}
*/
export function getPullRequestRepository() {
if (isBuildkite) {
const repository = getEnv("BUILDKITE_PULL_REQUEST_REPO", false);
if (repository) {
return parseGitRepository(repository);
}
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getRepositoryOwner(cwd) {
const repository = getRepository(cwd);
if (repository) {
const [owner] = repository.split("/");
if (owner) {
return owner;
}
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getCommit(cwd) {
if (!cwd) {
if (isBuildkite) {
const commit = getEnv("BUILDKITE_COMMIT", false);
if (commit) {
return commit;
}
}
if (isGithubAction) {
const commit = getEnv("GITHUB_SHA", false);
if (commit) {
return commit;
}
}
}
const { error, stdout } = spawnSync(["git", "rev-parse", "HEAD"], { cwd });
if (!error) {
return stdout.trim();
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getCommitMessage(cwd) {
if (!cwd) {
if (isBuildkite) {
const message = getEnv("BUILDKITE_MESSAGE", false);
if (message) {
return message;
}
}
}
const { error, stdout } = spawnSync(["git", "log", "-1", "--pretty=%B"], { cwd });
if (!error) {
return stdout.trim();
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getBranch(cwd) {
if (!cwd) {
if (isBuildkite) {
const branch = getEnv("BUILDKITE_BRANCH", false);
if (branch) {
return branch;
}
}
if (isGithubAction) {
const ref = getEnv("GITHUB_REF_NAME", false);
if (ref) {
return ref;
}
}
}
const { error, stdout } = spawnSync(["git", "rev-parse", "--abbrev-ref", "HEAD"], { cwd });
if (!error) {
return stdout.trim();
}
}
/**
* @param {string} [cwd]
* @returns {string | undefined}
*/
export function getMainBranch(cwd) {
if (!cwd) {
if (isBuildkite) {
const branch = getEnv("BUILDKITE_PIPELINE_DEFAULT_BRANCH", false);
if (branch) {
return branch;
}
}
if (isGithubAction) {
const headRef = getEnv("GITHUB_HEAD_REF", false);
if (headRef) {
return headRef;
}
}
}
const { error, stdout } = spawnSync(["git", "symbolic-ref", "refs/remotes/origin/HEAD"], { cwd });
if (!error) {
return stdout.trim().replace("refs/remotes/origin/", "");
}
}
/**
* @param {string} [cwd]
* @returns {boolean}
*/
export function isMainBranch(cwd) {
return !isFork(cwd) && getBranch(cwd) === getMainBranch(cwd);
}
/**
* @returns {boolean}
*/
export function isPullRequest() {
if (isBuildkite) {
return !isNaN(parseInt(getEnv("BUILDKITE_PULL_REQUEST", false)));
}
if (isGithubAction) {
return /pull_request|merge_group/.test(getEnv("GITHUB_EVENT_NAME", false));
}
return false;
}
/**
* @returns {number | undefined}
*/
export function getPullRequest() {
if (isBuildkite) {
const pullRequest = getEnv("BUILDKITE_PULL_REQUEST", false);
if (pullRequest) {
return parseInt(pullRequest);
}
}
if (isGithubAction) {
const eventPath = getEnv("GITHUB_EVENT_PATH", false);
if (eventPath && existsSync(eventPath)) {
const event = JSON.parse(readFile(eventPath, { cache: true }));
const pullRequest = event["pull_request"];
if (pullRequest) {
return parseInt(pullRequest["number"]);
}
}
}
}
/**
* @returns {string | undefined}
*/
export function getTargetBranch() {
if (isPullRequest()) {
if (isBuildkite) {
return getEnv("BUILDKITE_PULL_REQUEST_BASE_BRANCH", false);
}
if (isGithubAction) {
return getEnv("GITHUB_BASE_REF", false);
}
}
}
/**
* @returns {boolean}
*/
export function isFork() {
if (isBuildkite) {
const repository = getEnv("BUILDKITE_PULL_REQUEST_REPO", false);
return !!repository && repository !== getEnv("BUILDKITE_REPO", false);
}
if (isGithubAction) {
const eventPath = getEnv("GITHUB_EVENT_PATH", false);
if (eventPath && existsSync(eventPath)) {
const event = JSON.parse(readFile(eventPath, { cache: true }));
const pullRequest = event["pull_request"];
if (pullRequest) {
return !!pullRequest["head"]["repo"]["fork"];
}
}
}
return false;
}
/**
* @param {string} [cwd]
* @returns {boolean}
*/
export function isMergeQueue(cwd) {
return /^gh-readonly-queue/.test(getBranch(cwd));
}
/**
* @returns {string | undefined}
*/
export function getGithubToken() {
const cachedToken = getSecret("GITHUB_TOKEN", { required: false });
if (typeof cachedToken === "string" || !which("gh")) {
return cachedToken || undefined;
}
const { error, stdout } = spawnSync(["gh", "auth", "token"]);
const token = error ? "" : stdout.trim();
setEnv("GITHUB_TOKEN", token);
return token || undefined;
}
/**
* @typedef {object} CurlOptions
* @property {string} [method]
* @property {string} [body]
* @property {Record<string, string | undefined>} [headers]
* @property {number} [timeout]
* @property {boolean} [cache]
* @property {number} [retries]
* @property {boolean} [json]
* @property {boolean} [arrayBuffer]
* @property {string} [filename]
*/
/**
* @typedef {object} CurlResult
* @property {number} status
* @property {string} statusText
* @property {Error | undefined} error
* @property {any} body
*/
/** @type {Record<string, CurlResult | undefined>} */
let cachedResults;
/**
* @param {string} url
* @param {CurlOptions} [options]
* @returns {Promise<CurlResult>}
*/
export async function curl(url, options = {}) {
let { hostname, href } = new URL(url);
let method = options["method"] || "GET";
let input = options["body"];
let headers = options["headers"] || {};
let retries = options["retries"] || 3;
let json = options["json"];
let arrayBuffer = options["arrayBuffer"];
let filename = options["filename"];
let cacheKey;
let cache = options["cache"];
if (cache) {
cacheKey = `${method} ${href}`;
if (cachedResults?.[cacheKey]) {
return cachedResults[cacheKey];
}
}
if (typeof headers["Authorization"] === "undefined") {
if (hostname === "api.github.com" || hostname === "uploads.github.com") {
const githubToken = getGithubToken();
if (githubToken) {
headers["Authorization"] = `Bearer ${githubToken}`;
}
}
}
let status;
let statusText;
let body;
let error;
for (let i = 0; i < retries; i++) {
if (i > 0) {
await new Promise(resolve => setTimeout(resolve, 1000 * (i + 1)));
}
let response;
try {
response = await fetch(href, { method, headers, body: input });
} catch (cause) {
debugLog("$", "curl", href, "-> error");
error = new Error(`Fetch failed: ${method} ${url}`, { cause });
continue;
}
status = response["status"];
statusText = response["statusText"];
debugLog("$", "curl", href, "->", status, statusText);
const ok = response["ok"];
try {
if (filename && ok) {
const buffer = await response.arrayBuffer();
writeFile(filename, new Uint8Array(buffer));
} else if (arrayBuffer && ok) {
body = await response.arrayBuffer();
} else if (json && ok) {
body = await response.json();
} else {
body = await response.text();
}
} catch (cause) {
error = new Error(`Fetch failed: ${method} ${url}`, { cause });
continue;
}
if (response["ok"]) {
break;
}
error = new Error(`Fetch failed: ${method} ${url}: ${status} ${statusText}`, { cause: body });
if (status === 400 || status === 404 || status === 422) {
break;
}
}
if (cacheKey) {
cachedResults ||= {};
cachedResults[cacheKey] = { status, statusText, error, body };
}
return {
status,
statusText,
error,
body,
};
}
/**
* @param {string} url
* @param {CurlOptions} options
* @returns {Promise<any>}
*/
export async function curlSafe(url, options) {
const result = await curl(url, options);
const { error, body } = result;
if (error) {
throw error;
}
return body;
}
/** @type {Record<string, string> | undefined} */
let cachedFiles;
/**
* @param {string} filename
* @param {object} [options]
* @param {boolean} [options.cache]
* @returns {string}
*/
export function readFile(filename, options = {}) {
const absolutePath = resolve(filename);
if (options["cache"]) {
if (cachedFiles?.[absolutePath]) {
return cachedFiles[absolutePath];
}
}
debugLog("$", "cat", absolutePath);
let content;
try {
content = readFileSync(absolutePath, "utf-8");
} catch (cause) {
throw new Error(`Read failed: ${absolutePath}`, { cause });
}
if (options["cache"]) {
cachedFiles ||= {};
cachedFiles[absolutePath] = content;
}
return content;
}
/**
* @param {string} path
* @param {number} mode
*/
export function chmod(path, mode) {
debugLog("$", "chmod", path, mode);
chmodSync(path, mode);
}
/**
* @param {string} filename
* @param {string | Buffer} content
* @param {object} [options]
* @param {number} [options.mode]
*/
export function writeFile(filename, content, options) {
mkdir(dirname(filename));
debugLog("$", "touch", filename);
writeFileSync(filename, content);
if (options?.mode) {
chmod(filename, options.mode);
}
}
/**
* @param {string} source
* @param {string} destination
* @param {object} [options]
* @param {number} [options.mode]
*/
export function copyFile(source, destination, options) {
mkdir(dirname(destination));
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