Method load

website/public/wasm/web-tree-sitter.js:1482–1516

* Load a language from a WebAssembly module. * The module can be provided as a path to a file or as a buffer.

(input)

   * The module can be provided as a path to a file or as a buffer.
   */
  static async load(input) {
    let binary2;
    if (input instanceof Uint8Array) {
      binary2 = input;
    } else if (globalThis.process?.versions.node) {
      const fs2 = await import("fs/promises");
      binary2 = await fs2.readFile(input);
    } else {
      const response = await fetch(input);
      if (!response.ok) {
        const body2 = await response.text();
        throw new Error(`Language.load failed with status ${response.status}.

${body2}`);
      }
      const retryResp = response.clone();
      try {
        binary2 = await WebAssembly.compileStreaming(response);
      } catch (reason) {
        console.error("wasm streaming compile failed:", reason);
        console.error("falling back to ArrayBuffer instantiation");
        binary2 = new Uint8Array(await retryResp.arrayBuffer());
      }
    }
    const mod = await C.loadWebAssemblyModule(binary2, { loadAsync: true });
    const symbolNames = Object.keys(mod);
    const functionName = symbolNames.find((key) => LANGUAGE_FUNCTION_REGEX.test(key) && !key.includes("external_scanner_"));
    if (!functionName) {
      console.log(`Couldn't find language function in Wasm file. Symbols:
${JSON.stringify(symbolNames, null, 2)}`);
      throw new Error("Language.load failed: no language function found in Wasm file");
    }
    const languageAddress = mod[functionName]();
    return new _Language(INTERNAL, languageAddress);
  }
};

// lib/web-tree-sitter.mjs