Method parse

lib/wasm-sync/WebAssemblyParser.js:75–204

* Parses the provided source and updates the parser state. * @param {string | Buffer | PreparsedAst} source the source to parse * @param {ParserState} state the parser state * @returns {ParserState} the parser state

(source, state)

	 * @returns {ParserState} the parser state
	 */
	parse(source, state) {
		if (!Buffer.isBuffer(source)) {
			throw new Error("WebAssemblyParser input must be a Buffer");
		}

		// flag it as ESM
		/** @type {BuildInfo} */
		(state.module.buildInfo).strict = true;
		/** @type {BuildMeta} */
		(state.module.buildMeta).exportsType = "namespace";

		// parse it
		const program = decode(source, decoderOpts);
		const module = program.body[0];

		const moduleContext = moduleContextFromModuleAST(module);

		// extract imports and exports
		/** @type {string[]} */
		const exports = [];
		const buildMeta = /** @type {SyncWasmModuleBuildMeta} */ (
			state.module.buildMeta
		);
		/** @type {Record<string, string> | undefined} */
		let jsIncompatibleExports = (buildMeta.jsIncompatibleExports = undefined);

		/** @typedef {ModuleImport | null} ImportNode */
		/** @type {ImportNode[]} */
		const importedGlobals = [];

		t.traverse(module, {
			ModuleExport({ node }) {
				const descriptor = node.descr;

				if (descriptor.exportType === "Func") {
					const funcIdx = descriptor.id.value;

					/** @type {t.FuncSignature} */
					const funcSignature = moduleContext.getFunction(funcIdx);

					const incompatibleType =
						getJsIncompatibleTypeOfFuncSignature(funcSignature);

					if (incompatibleType) {
						if (jsIncompatibleExports === undefined) {
							jsIncompatibleExports =
								/** @type {SyncWasmModuleBuildMeta} */
								(state.module.buildMeta).jsIncompatibleExports = {};
						}
						jsIncompatibleExports[node.name] = incompatibleType;
					}
				}

				exports.push(node.name);

				if (node.descr && node.descr.exportType === "Global") {
					const refNode = importedGlobals[node.descr.id.value];
					if (refNode) {