@commitlint/rules/lib/footer-leading-blank.js

Lint your commit messages

import toLines from "@commitlint/to-lines";
import message from "@commitlint/message";
export const footerLeadingBlank = (parsed, when = "always") => {
    // Flunk if no footer is found
    if (!parsed.footer) {
        return [true];
    }
    const negated = when === "never";
    const rawLines = toLines(parsed.raw);
    const footerLines = toLines(parsed.footer);
    const footerOffset = rawLines.indexOf(footerLines[0]);
    const [leading] = rawLines.slice(footerOffset - 1);
    // Check if the first line of footer is empty
    const succeeds = leading === "";
    return [
        negated ? !succeeds : succeeds,
        message([
            "footer",
            negated ? "may not" : "must",
            "have leading blank line",
        ]),
    ];
};
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