Conventional Commits v1.0.0

Header grammar: <type>[(scope)][!]: <description>. Body and footers are separated by blank lines. Footers follow the git-trailer convention.

Type → SemVer → Emoji

All emojis are object-based and gender-neutral — no person/profession glyphs that default to a specific presentation in most fonts.

Emoji placement: prepend before the type, then a single space — ⚡ feat(parser): add array support. Don't replace the type with the emoji; tooling (semantic-release, commitlint) parses the textual type. Some teams prefer the :zap: shortcode form for plain-text terminals.

Breaking changes — two mechanisms

BREAKING-CHANGE (hyphen) is a synonym only as a footer token. The text BREAKING CHANGE MUST be uppercase; everything else is case-insensitive.

Footer format (git-trailer rules)

<Token>: <value>          # standard
<Token> #<value>          # issue-ref form, e.g. Refs #133

• Token MUST replace whitespace with -: Reviewed-by, Acked-by, Signed-off-by. The lone exception is BREAKING CHANGE (space allowed).
• Footer values may span newlines; parsing terminates at the next valid Token: or Token # pair.
• Footers begin one blank line after the body.

Examples

⚡ feat(parser): add ability to parse arrays

🐛 fix: prevent racing of requests

Introduce a request id and a reference to latest request.

Reviewed-by: Z
Refs: #123

💥 chore!: drop Node 6 from CI

BREAKING CHANGE: dropping Node 6 which hits end of life in April

revert: let us never again speak of the noodle incident

Refs: 676104e, a215868

Pitfalls

• Forgetting the space after the colon in the header — feat:add x is invalid.
• Writing a footer token with a space (Reviewed by:) — only BREAKING CHANGE may contain a space; everything else needs -.
• Using lowercase breaking change: — the token MUST be uppercase, unlike the rest of the spec which is case-insensitive.
• Putting BREAKING CHANGE in the body instead of the footer block — tools that parse trailers (and SemVer release tooling) will miss it; the MAJOR bump won't trigger.
• Assuming ! alone bumps MAJOR but skipping a description that explains the break — when ! is used without a BREAKING CHANGE: footer, the description is the break explanation, so it must be self-contained.
• Replacing the textual type with an emoji (⚡(parser): ...) — commitlint/semantic-release won't recognize it; always keep feat/fix/etc. after the emoji.
• Avoid person/profession emoji (👷, 👨‍💻, 💄) for type icons — they default to a specific gender presentation in most fonts and exclude readers; prefer object glyphs (🤖, 🔧, 🎨).
• Multi-codepoint emoji (♻️ uses VS-16, ZWJ sequences) can confuse regex-based hooks counting characters; prefer the :shortcode: form if your toolchain is byte-fragile.
• Scope must be a noun in parens (fix(parser):), not a verb or sentence; pick one scope or omit.
• revert is conventional, not specified — agree on a project convention (most tools expect revert: <subject> + Refs: footer with reverted SHAs).