animspec

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Contribute a primitive ​

The vocabulary grows one registry entry at a time, and most of it is expected to come from outside (the roadmap's M2 milestone is 50 primitives). This page is the short path; CONTRIBUTING is the source of truth for every rule named here.

The one rule ​

A new primitive must draw something no existing primitive can draw by changing its params. If an existing primitive could draw it with different params, the change is a new param or enum value on that primitive, not a new primitive. When you think you have a case, open a proposal first: the discussion happens before the code.

The four style questions ​

Every primitive, new or changed, is reviewed against four questions:

  1. Does it use negative space rather than fill the frame?
  2. Does one signal drive what you see?
  3. Does every element carry information?
  4. Does it work in pure black and white?

Read them with their full context in CONTRIBUTING.

The path in, five steps ​

  1. Open a proposal issue from the primitive proposal template, labelled good first primitive. The proposal is where the style questions get answered early.
  2. Implement one registry entry in src/primitives/registry.ts: type, category, description, tier, params and draw. A contribution starts as tier contrib.
  3. Run npm run verify and make it green. That one offline command is the whole quality bar: registry, validator, determinism, the four vetting gates (purity, palette, reactivity, budget) and package parity. A primitive that fails any gate is not merged.
  4. Sign the CLA. Outside contributions merge only with a signed Contributor Licence Agreement on record, and the CLA check enforces it automatically.
  5. Open the pull request. CI runs the same npm run verify plus a secret scan, and the CLA gate must pass.

Before you write code ​

Try the vocabulary first: the user guide shows how to write a spec and render frames, and the vocabulary lists every primitive with its params. Most proposals that survive review started as someone playing with a spec that could not draw what they wanted.