@knighted/reparse

Multiple SWC parsings of the same file with correct spans.

Provides a workaround for swc/1366.

Requirements

• Node >= 20.11.0
• @swc/core >= 1.5.24 as peer dependency

Example

There are four exports reparse, reparseFile, reparseSync and reparseFileSync.

import { reparse } from '@knighted/reparse'
import assert from 'node:assert/strict'

const ast1 = await reparse('const foo = "bar"')
const ast2 = await reparse('const foo = "bar"')

assert.equal(ast1.span.start, ast2.span.start)
assert.equal(ast1.span.end, ast2.span.end)

Sync file example:

import { reparseFileSync } from '@knighted/reparse'

const ast0 = reparseFileSync('./file.ts')
const ast1 = reparseFileSync('./file.ts')

console.log(ast0.span.start === ast1.span.start) // true