const fs = require("fs");

const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });

function graphemes(str) {

return Array.from(segmenter.segment(str), s => s.segment);

function capGraphemes(str, limit, { ellipsis = false } = {}) {

const PR_BUILD_PREFIX = "PR BUILD";

function formatPrChangelog({ title, number, commits }) {

module.exports = { formatPrChangelog, capGraphemes, graphemes };

if (require.main === module) {

const mode = process.argv[2];

if (mode === "pr") {

const pr = JSON.parse(fs.readFileSync("pr.json", "utf8"));

fs.writeFileSync("changelog.txt", formatPrChangelog(pr), "utf8");

} else if (mode === "cap") {

const buildVersion = process.env.BUILD_VERSION;

const input = fs.readFileSync("changelog.txt", "utf8");

fs.writeFileSync(

`android/fastlane/metadata/android/en-US/changelogs/${buildVersion}.txt`,

capGraphemes(input, 500, { ellipsis: true }),

"utf8"

);

} else {

console.error(`Unknown mode "${mode}". Usage: node changelog.js <pr|cap>`);

process.exit(1);

}