unbuild loads config in cjs context

[danielroe]

unbuild/src/builder/untyped.ts

Lines 29 to 32 in fc7c164

	const _require = jiti(ctx.options.rootDir, options.jiti)
	const distDir = entry.outDir!
	const srcConfig = _require(resolve(ctx.options.rootDir, entry.input))

Because jiti runs in an CJS context, although transpiled, ESM-only modules can't be loaded within unbuild's build.config (even if it is named build.config.mjs).

Would there be any merit in moving unbuild to use c12 and resolving this there?

Related: unjs/jiti#32.

[pi0]

Indeed would be good idea to use c12/jiti stack but as you pointed it is still cjs. Issue with cjs and it will resolve only for mjs (ts would have same issues)

Issue with estree-walker is resolved in jiti but had to move it behind esmResolve flag due to regressions. We might enable that flag by default when loading config.

[pi0]

#94