# JS-on-SX cherry-picked conformance slice

A hand-picked slice inspired by test262 expression tests. Each test is one
JS expression in a `.js` file, paired with an `.expected` file containing
the SX-printed result that `js-eval` should produce.

Run via:

    bash lib/js/conformance.sh

The slice intentionally avoids anything not yet implemented (statements,
`var`/`let`, `function`, regex, template strings, prototypes, `new`,
`this`, classes, async). Those land in later phases.

## Expected value format

`js-eval` returns SX values. The epoch protocol prints them thus:

| JS value         | Expected file contents |
|------------------|-----------------------|
| `42`             | `42`                  |
| `3.14`           | `3.14`                |
| `true` / `false` | `true` / `false`      |
| `"hi"`           | `"hi"`                |
| `null`           | `nil`                 |
| `undefined`      | `"js-undefined"`      |
| `[1,2,3]`        | `(1 2 3)`             |
| `{}`             | `{}`                  |

The runner does a substring match — the `.expected` file can contain just
the distinguishing part of the result.