Sourcemaps always report position 0 #8
Description
In this function the sourcemap positions are always returned as position 0. This breaks mapping back to the original source and coverage reporting.
transformWithMap(code: string, _id: string) {
const generated = this.transform(code, _id)
if (generated) {
const ms = new MagicString(code, { filename: _id })
ms.overwrite(0, code.length, generated)
return {
code: ms.toString(),
map: ms.generateMap({ hires: true }),
}
}
}A simpler reproducible example (effectively the same code):
import MagicString from 'magic-string';
const code = `const answer = 42;\n\nconsole.log("The answer is", answer);`;
const generated = code;
const ms = new MagicString(code, { filename: 'test.ts' })
ms.overwrite(0, code.length, generated)
console.log(ms.generateMap({ hires: true }));Returns:
SourceMap {
version: 3,
file: undefined,
sources: [ '' ],
sourcesContent: undefined,
names: [],
mappings: 'AAAA;AAAA'
}
AAAA is position 0 for both statements.