137 lines
4.3 KiB
JavaScript
137 lines
4.3 KiB
JavaScript
// @flow
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const {spawnSync, execFileSync} = require("child_process");
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const fs = require("fs");
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const stringify = require("json-stable-stringify");
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const path = require("path");
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const paths = require("./paths");
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/*:: import type {GitState} from "../src/app/version"; */
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// Make sure that including paths.js after env.js will read .env variables.
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delete require.cache[require.resolve("./paths")];
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const NODE_ENV = process.env.NODE_ENV;
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if (!NODE_ENV) {
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throw new Error(
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"The NODE_ENV environment variable is required but was not specified."
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);
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}
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// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
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var dotenvFiles = [
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`${paths.dotenv}.${NODE_ENV}.local`,
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`${paths.dotenv}.${NODE_ENV}`,
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// Don't include `.env.local` for `test` environment
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// since normally you expect tests to produce the same
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// results for everyone
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...(NODE_ENV !== "test" ? [`${paths.dotenv}.local`] : []),
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paths.dotenv,
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];
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// Load environment variables from .env* files. Suppress warnings using silent
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// if this file is missing. dotenv will never modify any environment variables
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// that have already been set. Variable expansion is supported in .env files.
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// https://github.com/motdotla/dotenv
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// https://github.com/motdotla/dotenv-expand
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dotenvFiles.forEach((dotenvFile) => {
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if (fs.existsSync(dotenvFile)) {
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require("dotenv-expand")(
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require("dotenv").config({
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path: dotenvFile,
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})
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);
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}
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});
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// We support resolving modules according to `NODE_PATH`.
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// This lets you use absolute paths in imports inside large monorepos:
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// https://github.com/facebookincubator/create-react-app/issues/253.
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// It works similar to `NODE_PATH` in Node itself:
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// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
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// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
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// Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
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// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
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// We also resolve them to make sure all tools using them work consistently.
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const appDirectory = fs.realpathSync(process.cwd());
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process.env.NODE_PATH = (process.env.NODE_PATH || "")
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.split(path.delimiter)
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.filter((folder) => folder && !path.isAbsolute(folder))
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.map((folder) => path.resolve(appDirectory, folder))
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.join(path.delimiter);
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// Get the state of the SourceCred Git repository. This requires that
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// Git be installed. If this fails for you, please install Git.
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//
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// If the dependency on Git becomes a problem, we can consider making
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// this optional. However, note that this computation is performed at
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// build time, so end users of SourceCred as a library or application
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// should not need this dependency.
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function getGitState() /*: GitState */ {
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const env = {
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LANG: "C",
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LC_ALL: "C",
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TZ: "UTC",
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GIT_CONFIG_NOSYSTEM: "1",
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GIT_ATTR_NOSYSTEM: "1",
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};
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const diffIndex = spawnSync(
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"git",
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["-C", __dirname, "diff-index", "--quiet", "HEAD", "--"],
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{env}
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);
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const dirty = diffIndex.status !== 0;
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if (diffIndex.status !== 0 && diffIndex.status !== 1) {
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throw new Error(diffIndex.status + ": " + diffIndex.stderr.toString());
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}
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const commitHash = execFileSync(
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"git",
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["-C", __dirname, "rev-parse", "--short=12", "--verify", "HEAD"],
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{env}
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)
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.toString()
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.trim();
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const commitTimestamp = execFileSync(
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"git",
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[
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"-C",
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__dirname,
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"show",
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"--no-patch",
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"--format=%cd",
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"--date=format:%Y%m%d-%H%M",
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commitHash,
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],
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{env}
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)
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.toString()
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.trim();
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return {commitHash, commitTimestamp, dirty};
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}
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const SOURCECRED_GIT_STATE = stringify(getGitState());
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process.env.SOURCECRED_GIT_STATE = SOURCECRED_GIT_STATE;
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function getClientEnvironment() {
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const raw = {};
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// Useful for determining whether we’re running in production mode.
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// Most importantly, it switches React into the correct mode.
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raw.NODE_ENV = process.env.NODE_ENV || "development";
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// Used by `src/app/version.js`.
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raw.SOURCECRED_GIT_STATE = SOURCECRED_GIT_STATE;
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// Stringify all values so we can feed into Webpack's DefinePlugin.
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const stringified = {"process.env": {}};
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for (const key of Object.keys(raw)) {
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stringified["process.env"][key] = JSON.stringify(raw[key]);
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}
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return {raw, stringified};
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}
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module.exports = getClientEnvironment;
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