backport/dist/src/lib/cherrypickAndCreateTargetPullRequest/get-backport-branch-name.js

A CLI tool that automates the process of backporting commits

import Handlebars from 'handlebars';
import { getShortSha } from '../github/commit-formatters.js';
/*
 * Returns the name of the backport branch without remote name
 *
 * Examples:
 * For a single PR: `backport/7.x/pr-1234`
 * For a single commit: `backport/7.x/commit-abcdef`
 * For multiple: `backport/7.x/pr-1234_commit-abcdef`
 */
export function getBackportBranchName({ options, targetBranch, commits, }) {
    const refValues = commits
        .map((commit) => commit.sourcePullRequest
        ? `pr-${commit.sourcePullRequest.number}`
        : `commit-${getShortSha(commit.sourceCommit.sha)}`)
        .join('_')
        .slice(0, 200);
    const sourcePullRequest = commits.at(0)?.sourcePullRequest; // assume that all commits are from the same PR
    const defaultBackportBranchName = 'backport/{{targetBranch}}/{{refValues}}';
    const backportBranchName = options.backportBranchName ?? defaultBackportBranchName;
    const template = Handlebars.compile(backportBranchName);
    return template({
        sourcePullRequest,
        targetBranch,
        refValues,
    });
}
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