[Bug] Invalid fallback "javascript/auto" rule.type passed to getRawGeneratorOptions

[omonk]

rspack/packages/rspack/src/config/adapter.ts

Line 444 in d73b4fa

? getRawGeneratorOptions(rule.generator, rule.type ?? "javascript/auto")

The default type argument is "javascript/auto" which throws an error during build as there is no condition which matches

Error: unreachable: unknow module type: javascript/auto

rspack/packages/rspack/src/config/adapter.ts

Lines 683 to 728 in d73b4fa

	function getRawGeneratorOptions(
	generator: { [k: string]: any },
	type: string
	): RawGeneratorOptions {
	if (type === "asset") {
	return {
	type: "asset",
	asset: generator ? getRawAssetGeneratorOptions(generator) : undefined
	};
	}
	if (type === "asset/inline") {
	return {
	type: "asset/inline",
	assetInline: generator
	? getRawAssetInlineGeneratorOptions(generator)
	: undefined
	};
	}
	if (type === "asset/resource") {
	return {
	type: "asset/resource",
	assetResource: generator
	? getRawAssetResourceGeneratorOptions(generator)
	: undefined
	};
	}
	if (type === "css") {
	return {
	type: "css",
	css: getRawCssGeneratorOptions(generator)
	};
	}
	if (type === "css/auto") {
	return {
	type: "css/auto",
	cssAuto: getRawCssAutoOrModuleGeneratorOptions(generator)
	};
	}
	if (type === "css/module") {
	return {
	type: "css/module",
	cssModule: getRawCssAutoOrModuleGeneratorOptions(generator)
	};
	}
	throw new Error(`unreachable: unknow module type: ${type}`);
	}

[xc2]

Are you passing an empty generator config to a rule item?

[ahabhgk]

This should be fixed by https://github.com/web-infra-dev/rspack/pull/6997/files#diff-5f5bb1aeb2a977ff30c5ab822c79f09b76476c503462939c69beb9e4d7552123, which will be released in 1.0.0-alpha.1

[ahabhgk]

Feel free to re-open if it still exists in v1.0.0-alpha.1

[9aoy]

It seems that it just avoids using javascript/auto as the default value. When I manually set the type to javascript/auto in rspack v1.0.0-alpha.3, I still encounter this error.

According to the introduction of webpack, when the type is javascript/auto, it seems that it should be ignored instead of throw an error. see