Notes/bin/update-nightly-version.ts

/**
 * @module
 * 
 * The nightly version works uses the version described in `package.json`, just like any release.
 * The problem with this approach is that production builds have a very aggressive cache, and
 * usually running the nightly with this cached version of the application will mean that the
 * user might run into module not found errors or styling errors caused by an old cache.
 * 
 * This script is supposed to be run in the CI, which will update locally the version field of
 * `package.json` to contain the date. For example, `0.90.9-beta` will become `0.90.9-test-YYMMDD-HHMMSS`.
 * 
 */

import { fileURLToPath } from "url";
import { dirname, join } from "path";
import fs from "fs";

function processVersion(version) {
    // Remove the beta suffix if any.
    version = version.replace("-beta", "");

    // Add the nightly suffix, plus the date.
    const referenceDate = new Date()
        .toISOString()
        .substring(2, 19)
        .replace(/[-:]*/g, "")
        .replace("T", "-");
    version = `${version}-test-${referenceDate}`;

    return version;
}

function main() {
    const scriptDir = dirname(fileURLToPath(import.meta.url));
    const packageJsonPath = join(scriptDir, "..", "package.json");
    
    // Read the version from package.json and process it.
    const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, "utf-8"));
    const currentVersion = packageJson.version;
    const adjustedVersion = processVersion(currentVersion);
    console.log("Current version is", currentVersion);
    console.log("Adjusted version is", adjustedVersion);

    // Write the adjusted version back in.
    packageJson.version = adjustedVersion;
    const formattedJson = JSON.stringify(packageJson, null, 4);    
    fs.writeFileSync(packageJsonPath, formattedJson);
}

main();