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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { execSync } from 'child_process';
function getLatestStableTag() {
// Fetches all tags, then filters for the latest stable (non-prerelease) tag.
const tags = execSync('git tag --list "v*.*.*" --sort=-v:refname')
.toString()
.split('\n');
const latestStableTag = tags.find((tag) =>
tag.match(/^v[0-9]+\.[0-9]+\.[0-9]+$/),
);
if (!latestStableTag) {
throw new Error('Could not find a stable tag.');
}
return latestStableTag;
}
function getShortSha() {
return execSync('git rev-parse --short HEAD').toString().trim();
}
function getNextVersionString(stableVersion, minorIncrement) {
const [major, minor] = stableVersion.substring(1).split('.');
const nextMinorVersion = parseInt(minor, 10) + minorIncrement;
return `${major}.${nextMinorVersion}.0`;
}
export function getNightlyTagName(stableVersion) {
const version = getNextVersionString(stableVersion, 2);
const now = new Date();
const year = now.getUTCFullYear().toString();
const month = (now.getUTCMonth() + 1).toString().padStart(2, '0');
const day = now.getUTCDate().toString().padStart(2, '0');
const date = `${year}${month}${day}`;
const sha = getShortSha();
return `v${version}-nightly.${date}.${sha}`;
}
export function getPreviewTagName(stableVersion) {
const version = getNextVersionString(stableVersion, 1);
return `v${version}-preview`;
}
function getPreviousReleaseTag(isNightly) {
if (isNightly) {
console.error('Finding latest nightly release...');
return execSync(
`gh release list --limit 100 --json tagName | jq -r '[.[] | select(.tagName | contains("nightly"))] | .[0].tagName'`,
)
.toString()
.trim();
} else {
console.error('Finding latest STABLE release (excluding pre-releases)...');
return execSync(
`gh release list --limit 100 --json tagName | jq -r '[.[] | select(.tagName | (contains("nightly") or contains("preview")) | not)] | .[0].tagName'`,
)
.toString()
.trim();
}
}
export function getReleaseVersion() {
const isNightly = process.env.IS_NIGHTLY === 'true';
const isPreview = process.env.IS_PREVIEW === 'true';
const manualVersion = process.env.MANUAL_VERSION;
let releaseTag;
if (isNightly) {
console.error('Calculating next nightly version...');
const stableVersion = getLatestStableTag();
releaseTag = getNightlyTagName(stableVersion);
} else if (isPreview) {
console.error('Calculating next preview version...');
const stableVersion = getLatestStableTag();
releaseTag = getPreviewTagName(stableVersion);
} else if (manualVersion) {
console.error(`Using manual version: ${manualVersion}`);
releaseTag = manualVersion;
} else {
throw new Error(
'Error: No version specified and this is not a nightly or preview release.',
);
}
if (!releaseTag) {
throw new Error('Error: Version could not be determined.');
}
if (!releaseTag.startsWith('v')) {
console.error("Version is missing 'v' prefix. Prepending it.");
releaseTag = `v${releaseTag}`;
}
if (releaseTag.includes('+')) {
throw new Error(
'Error: Versions with build metadata (+) are not supported for releases. Please use a pre-release version (e.g., v1.2.3-alpha.4) instead.',
);
}
if (!releaseTag.match(/^v[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.-]+)?$/)) {
throw new Error(
'Error: Version must be in the format vX.Y.Z or vX.Y.Z-prerelease',
);
}
const releaseVersion = releaseTag.substring(1);
let npmTag = 'latest';
if (releaseVersion.includes('-')) {
npmTag = releaseVersion.split('-')[1].split('.')[0];
}
const previousReleaseTag = getPreviousReleaseTag(isNightly);
return { releaseTag, releaseVersion, npmTag, previousReleaseTag };
}
if (process.argv[1] === new URL(import.meta.url).pathname) {
try {
const versions = getReleaseVersion();
console.log(JSON.stringify(versions));
} catch (error) {
console.error(error.message);
process.exit(1);
}
}
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