Method setSource

src/Module.ts:839–964

({
		ast,
		code,
		customTransformCache,
		originalCode,
		originalSourcemap,
		resolvedIds,
		sourcemapChain,
		transformDependencies,
		transformFiles,
		safeVariableNames,
		...moduleOptions
	}: TransformModuleJSON & {
		resolvedIds?: ResolvedIdMap;
		transformFiles?: EmittedFile[] | undefined;
	})

	}

	async setSource({
		ast,
		code,
		customTransformCache,
		originalCode,
		originalSourcemap,
		resolvedIds,
		sourcemapChain,
		transformDependencies,
		transformFiles,
		safeVariableNames,
		...moduleOptions
	}: TransformModuleJSON & {
		resolvedIds?: ResolvedIdMap;
		transformFiles?: EmittedFile[] | undefined;
	}): Promise<void> {
		timeStart('generate ast', 3);
		if (code.startsWith('#!')) {
			const shebangEndPosition = code.indexOf('\n');
			this.shebang = code.slice(2, shebangEndPosition);
		}

		this.info.code = code;
		this.info.safeVariableNames = safeVariableNames;
		this.originalCode = originalCode;

		// We need to call decodedSourcemap on the input in case they were hydrated from json in the cache and don't
		// have the lazy evaluation cache configured. Right now this isn't enforced by the type system because the
		// RollupCache stores `ExistingDecodedSourcemap` instead of `ExistingRawSourcemap`
		this.originalSourcemap = decodedSourcemap(originalSourcemap);
		this.sourcemapChain = sourcemapChain.map(mapOrMissing =>
			mapOrMissing.missing ? mapOrMissing : decodedSourcemap(mapOrMissing)
		);

		// If coming from cache and this value is already fully decoded, we want to re-encode here to save memory.
		resetSourcemapCache(this.originalSourcemap, this.sourcemapChain);

		if (transformFiles) {
			this.transformFiles = transformFiles;
		}
		this.transformDependencies = transformDependencies;
		this.customTransformCache = customTransformCache;
		this.updateOptions(moduleOptions);

		this.resolvedIds = resolvedIds ?? Object.create(null);

		// By default, `id` is the file name. Custom resolvers and loaders
		// can change that, but it makes sense to use it for the source file name
		const fileName = this.id;

		this.magicString = new MagicString(code, {
			filename: (this.excludeFromSourcemap ? null : fileName)!, // don't include plugin helpers in sourcemap
			indentExclusionRanges: []
		});

		this.astContext = {
			addDynamicImport: this.addDynamicImport.bind(this),
			addExport: this.addExport.bind(this),