> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solved.gg/llms.txt
> Use this file to discover all available pages before exploring further.

# Initiatives

> I1 ES Engine, I2 Bun-exclusive, and I3 Deno-exclusive — goals, ownership, and dependencies for pre-v0.0.1.

# Initiatives

Pre-v0.0.1 is three initiatives under one program. They share principles and matrices, but they do not share exit bars.

## Dependency graph

```text theme={null}
                    ┌─────────────────────────────┐
                    │  I1  ES Engine (hard gate)  │
                    │  ES2026 + Test262 in-scope  │
                    └──────────────┬──────────────┘
                                   │ language bar
                 ┌─────────────────┴─────────────────┐
                 v                                   v
    ┌────────────────────────┐         ┌────────────────────────┐
    │ I2 Bun-exclusive APIs  │         │ I3 Deno-exclusive APIs │
    │ Bun.* / bun:* deltas   │         │ Deno.* / perms / KV    │
    └────────────────────────┘         └────────────────────────┘
                 │                                   │
                 └─────────────────┬─────────────────┘
                                   v
                    post-v0.0.1: shared Node surface,
                    frameworks, DX / yappy dogfood
```

**Rules:**

1. **I1** is the hard gate for the **language** half of tag `0.0.1`.
2. **I2** and **I3** may start inventory, stubs, and host wiring **in parallel** once the engine can run real modules (roughly after ES-5), but they must not claim completeness before I1’s bar is met.
3. Inventories and matrices for I2/I3 **ship in docs now**, even while status is `unsupported`.

## I1 — ES Engine

| Field                | Value                                                                    |
| -------------------- | ------------------------------------------------------------------------ |
| **Codename**         | ES Engine                                                                |
| **Goal**             | Own Zig VM fully compatible with the latest ECMAScript edition           |
| **Pin**              | ECMAScript **2026** (re-pin when Ecma ships the next edition)            |
| **Oracle**           | Test262 language suite (in-scope set)                                    |
| **Primary surfaces** | Parser, bytecode/interpreter, values, GC roots, built-ins, ESM semantics |
| **Docs**             | [ES Engine](/scripty/v0.0.1-dev/es)                                      |
| **Tag impact**       | Blocks `0.0.1` until exit bar met                                        |

## I2 — Bun-exclusive surface

| Field                   | Value                                                               |
| ----------------------- | ------------------------------------------------------------------- |
| **Codename**            | Bun-exclusive                                                       |
| **Goal**                | Ship the API surface Bun has that Node and Deno do not              |
| **Filter**              | Native Bun globals / `bun:*` / first-class builtins only            |
| **Not this initiative** | Full Node compatibility, npm package parity                         |
| **Docs**                | [Bun-exclusive](/scripty/v0.0.1-dev/bun-exclusive)                  |
| **Tag impact**          | Docs + living matrix required; implementation depth tracked per row |

## I3 — Deno-exclusive surface

| Field                   | Value                                                      |
| ----------------------- | ---------------------------------------------------------- |
| **Codename**            | Deno-exclusive                                             |
| **Goal**                | Ship the API surface Deno has that Bun and Node do not     |
| **Filter**              | `Deno.*`, permissions model, Deno-native modules (e.g. KV) |
| **Not this initiative** | Shared Web APIs, Node-compat layers Deno also implements   |
| **Docs**                | [Deno-exclusive](/scripty/v0.0.1-dev/deno-exclusive)       |
| **Tag impact**          | Same as I2                                                 |

## What is deliberately not an initiative here

| Workstream                                  | Where it lives                                                             |
| ------------------------------------------- | -------------------------------------------------------------------------- |
| Shared Node-compat (`node:fs`, `http`, …)   | Post language-gate; see internal `docs/matrix/node.md` in the scripty repo |
| Framework dogfood (Next, Nuxt, Nest, Solid) | Post language-gate; equal priority then                                    |
| DX / yappy product trees                    | Separate repositories; embed API only in scripty                           |
| Package manager full npm peer graph         | Later PM milestones                                                        |

## Parallelism without lying

| Kind of work                         | When                                                                          |
| ------------------------------------ | ----------------------------------------------------------------------------- |
| Spec pins, Test262 harness, matrices | Immediately                                                                   |
| Parser / values / builtins (I1)      | Sequential ES-0 … ES-9                                                        |
| Exclusive inventories (I2/I3)        | Immediately (docs)                                                            |
| Exclusive implementations            | Prefer after ES-5 (core builtins exist); never mark `supported` without tests |
| Framework adapters                   | After I1 language bar                                                         |

## Ownership

| Layer               | Owner                                                      |
| ------------------- | ---------------------------------------------------------- |
| Language kernel     | scripty VM (`src/syntax`, `src/vm`)                        |
| Exclusive APIs      | scripty `api/` (or equivalent) + host bindings             |
| Public program docs | this tree (`docs/scripty/v0.0.1-dev`)                      |
| Host products       | DX / yappy repos — not this program’s implementation scope |


## Related topics

- [Pre-v0.0.1 program](/scripty/v0.0.1-dev/index.md)
- [Test262](/scripty/v0.0.1-dev/es/test262.md)
- [Introduction](/scripty/0.0.1-dev/index.md)
- [Roadmap](/scripty/v0.0.1-dev/roadmap.md)
- [Sources and pins](/scripty/v0.0.1-dev/reference/sources.md)