Merge pull request #14 from bytecodealliance/fixup-release-downloads

fix: release download urls without ratelimiting

Author: cfallin

npm/weval/index.js

@@ -1,97 +1,72 @@
 import { endianness } from "node:os";
-import { fileURLToPath } from 'node:url';
-import { dirname, join, parse } from 'node:path';
+import { fileURLToPath } from "node:url";
+import { dirname, join, parse } from "node:path";
 import { platform, arch } from "node:process";
 import { mkdir } from "node:fs/promises";
 import { existsSync } from "node:fs";
 
-import decompress from 'decompress';
-import decompressUnzip from 'decompress-unzip';
-import decompressTar from 'decompress-tar';
-import xz from '@napi-rs/lzma/xz';
+import decompress from "decompress";
+import decompressUnzip from "decompress-unzip";
+import decompressTar from "decompress-tar";
+import xz from "@napi-rs/lzma/xz";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
 const TAG = "v0.3.2";
 
 async function getWeval() {
-    const knownPlatforms = {
-      "win32 x64 LE": "x86_64-windows",
-      "darwin arm64 LE": "aarch64-macos",
-      "darwin x64 LE": "x86_64-macos",
-      "linux x64 LE": "x86_64-linux",
-      "linux arm64 LE": "aarch64-linux",
-    };
+  const knownPlatforms = {
+    "win32 x64 LE": "x86_64-windows",
+    "darwin arm64 LE": "aarch64-macos",
+    "darwin x64 LE": "x86_64-macos",
+    "linux x64 LE": "x86_64-linux",
+    "linux arm64 LE": "aarch64-linux",
+  };
 
-    function getPlatformName() {
-      let platformKey = `${platform} ${arch} ${endianness()}`;
+  function getPlatformName() {
+    let platformKey = `${platform} ${arch} ${endianness()}`;
 
-      if (platformKey in knownPlatforms) {
-        return knownPlatforms[platformKey];
-      }
-      throw new Error(`Unsupported platform: "${platformKey}". "weval does not have a precompiled binary for the platform/architecture you are using. You can open an issue on https://github.com/bytecodealliance/weval/issues to request for your platform/architecture to be included."`);
+    if (platformKey in knownPlatforms) {
+      return knownPlatforms[platformKey];
     }
+    throw new Error(
+      `Unsupported platform: "${platformKey}". "weval does not have a precompiled binary for the platform/architecture you are using. You can open an issue on https://github.com/bytecodealliance/weval/issues to request for your platform/architecture to be included."`
+    );
+  }
 
-    async function getJSON(url) {
-      let resp;
-      try {
-        resp = await fetch(url);
-        if (!resp.ok) {
-          throw new Error("non 2xx response code");
-        }
-        return resp.json();
-      } catch (err) {
-        const errMsg = err?.toString() ?? 'unknown error';
-        console.error(`failed to fetch JSON from URL [${url}] (status ${resp?.status}): ${errMsg}`);
-        process.exit(1);
-      }
-    }
-
-    const platformName = getPlatformName();
-    const assetSuffix = (platform == 'win32') ? 'zip' : 'tar.xz';
-    const exeSuffix = (platform == 'win32') ? '.exe' : '';
+  const platformName = getPlatformName();
+  const assetSuffix = platform == "win32" ? "zip" : "tar.xz";
+  const exeSuffix = platform == "win32" ? ".exe" : "";
 
-    const exeDir = join(__dirname, platformName);
-    const exe = join(exeDir, `weval${exeSuffix}`);
+  const exeDir = join(__dirname, platformName);
+  const exe = join(exeDir, `weval${exeSuffix}`);
 
-    // If we already have the executable installed, then return it
-    if (existsSync(exe)) {
-      return exe;
-    }
+  // If we already have the executable installed, then return it
+  if (existsSync(exe)) {
+    return exe;
+  }
 
-    await mkdir(exeDir, { recursive: true });
-    let repoBaseURL = `https://api.github.com/repos/bytecodealliance/weval`;
-    let response = await getJSON(`${repoBaseURL}/releases/tags/${TAG}`);
-      let id = response.id;
-      let assets = await getJSON(`${repoBaseURL}/releases/${id}/assets`);
-      let releaseAsset = `weval-${TAG}-${platformName}.${assetSuffix}`;
-      let asset = assets.find(asset => asset.name === releaseAsset);
-      if (!asset) {
-          console.error(`Can't find an asset named ${releaseAsset}`);
-          process.exit(1);
-      }
-      let data = await fetch(asset.browser_download_url);
-      if (!data.ok) {
-          console.error(`Error downloading ${asset.browser_download_url}`);
-          process.exit(1);
-      }
-      let buf = await data.arrayBuffer();
+  await mkdir(exeDir, { recursive: true });
+  const downloadUrl = `https://github.com/bytecodealliance/weval/releases/download/${TAG}/weval-${TAG}-${platformName}.${assetSuffix}`;
+  let data = await fetch(downloadUrl);
+  if (!data.ok) {
+    console.error(`Error downloading ${downloadUrl}`);
+    process.exit(1);
+  }
+  let buf = await data.arrayBuffer();
 
-      if (releaseAsset.endsWith('.xz')) {
-          buf = await xz.decompress(new Uint8Array(buf));
-      }
-      await decompress(Buffer.from(buf), exeDir, {
-          // Remove the leading directory from the extracted file.
-          strip: 1,
-          plugins: [
-              decompressUnzip(),
-              decompressTar()
-          ],
-          // Only extract the binary file and nothing else
-          filter: file => parse(file.path).base === `weval${exeSuffix}`,
-      });
+  if (downloadUrl.endsWith(".xz")) {
+    buf = await xz.decompress(new Uint8Array(buf));
+  }
+  await decompress(Buffer.from(buf), exeDir, {
+    // Remove the leading directory from the extracted file.
+    strip: 1,
+    plugins: [decompressUnzip(), decompressTar()],
+    // Only extract the binary file and nothing else
+    filter: (file) => parse(file.path).base === `weval${exeSuffix}`,
+  });
 
-    return exe;
+  return exe;
 }
 
 export default getWeval;