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utils.js
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utils.js
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// @ts-check
const https = require("https");
const { inspect } = require("util");
const { exec } = require("child_process");
/**
* Get env variable value
* @param {string} name name of env variable
* @throws if env variable is not set
*/
function env(name) {
const value = process.env[name];
if (value) return value;
exit(`env variable \`${name}\` is not set.`);
}
/**
* @param {string} message
* @param {number} [code]
* @returns {never}
*/
function exit(message, code = 1) {
if (code === 0) {
console.log(message);
} else {
console.log(message);
}
process.exit(code);
}
/**
* @param {string} text
*/
function formatAsHeading(text) {
const marker = "=".repeat(Math.max(50, text.length));
return `${marker}\n${text}:\n${marker}`;
}
/**
* Print print using util.inspect
* @param {any} obj
*/
function pprint(obj) {
console.log(inspect(obj, false, Infinity, true));
}
/**
* Send a HTTP request.
* @param {URL} url
* @param {import('https').RequestOptions & { body?: string }} options
* @returns {Promise<any>}
*/
function request(url, { body, ...options } = {}) {
console.log(`📡 Request: ${url}`);
return new Promise((resolve, reject) => {
const req = https.request(url, options, res => {
const chunks = [];
res.on("data", data => chunks.push(data));
res.on("end", () => {
const body = Buffer.concat(chunks).toString();
const contentType = res.headers["content-type"] || "";
contentType.includes("application/json")
? resolve(JSON.parse(body))
: resolve(body);
});
});
req.on("error", reject);
if (body) req.write(body);
req.end();
});
}
/**
* @param {string} key
* @param {string|boolean|null|number} value
*/
function setOutput(key, value) {
console.log(`::set-output name=${key}::${value}`);
}
/**
* Asynchronously run a shell command get its result.
* @param {string} command
* @param {"buffer"|"stream"|"silent"} [output]
* @returns {Promise<string>}
* @throws {Promise<{ stdout: string, stderr: string, code: number }>}
*/
function sh(command, output) {
const BOLD = "\x1b[1m";
const RESET = "\x1b[22m";
if (output !== "silent") {
console.group(`${BOLD}$ ${command}${RESET}`);
}
try {
return new Promise((resolve, reject) => {
let stdout = "";
let stderr = "";
const child = exec(command, { encoding: "utf-8" });
child.stdout.on("data", chunk => {
if (output === "stream") process.stdout.write(chunk);
stdout += chunk;
});
child.stderr.on("data", chunk => {
if (output === "stream") process.stderr.write(chunk);
stderr += chunk;
});
child.on("exit", code => {
stdout = stdout.trim();
stderr = stderr.trim();
if (output === "buffer") {
if (stdout) console.log(stdout);
if (stderr) console.error(stderr);
}
if (output && output !== "silent") {
console.log();
}
code === 0 ? resolve(stdout) : reject({ stdout, stderr, code });
});
});
} finally {
if (output !== "silent") {
console.groupEnd();
}
}
}
function yesOrNo(value) {
const str = String(value).trim();
if (/^(?:y|yes|true|1|on)$/i.test(str)) {
return true;
}
if (/^(?:n|no|false|0|off)$/i.test(value)) {
return false;
}
}
module.exports = {
env,
exit,
formatAsHeading,
pprint,
request,
setOutput,
sh,
yesOrNo,
};