60 lines
1.6 KiB
TypeScript
60 lines
1.6 KiB
TypeScript
import { unlink } from "node:fs";
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import { https } from "follow-redirects";
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import { tmpdir } from "node:os";
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import { extract } from "tar-fs";
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import { parse } from "node:url";
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import type { UrlWithStringQuery } from "node:url";
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interface FollowRedirOptions extends UrlWithStringQuery {
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maxBodyLength: number;
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}
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export const isValidUrl = (input: string) => {
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try {
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return !!new URL(input);
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} catch (err) {
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return false;
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}
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};
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/**
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* Determines if the running instance is inside an AWS Lambda container.
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* AWS_EXECUTION_ENV is for native Lambda instances
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* AWS_LAMBDA_JS_RUNTIME is for netlify instances
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* @returns boolean indicating if the running instance is inside a Lambda container
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*/
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export const isRunningInAwsLambda = () => {
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if (
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process.env["AWS_EXECUTION_ENV"] &&
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/^AWS_Lambda_nodejs/.test(process.env["AWS_EXECUTION_ENV"]) === true
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) {
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return true;
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} else if (
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process.env["AWS_LAMBDA_JS_RUNTIME"] &&
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/^nodejs/.test(process.env["AWS_LAMBDA_JS_RUNTIME"]) === true
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) {
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return true;
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}
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return false;
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};
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export const downloadAndExtract = async (url: string) =>
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new Promise<string>((resolve, reject) => {
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const getOptions = parse(url) as FollowRedirOptions;
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getOptions.maxBodyLength = 60 * 1024 * 1024; // 60mb
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const destDir = `${tmpdir()}/chromium-pack`;
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const extractObj = extract(destDir);
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https
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.get(url, (response) => {
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response.pipe(extractObj);
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extractObj.on("finish", () => {
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resolve(destDir);
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});
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})
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.on("error", (err) => {
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unlink(destDir, (_) => {
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reject(err);
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});
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});
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});
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