Wiring in NPM releases.

Signed-off-by: Dave Shanley <dave@quobix.com>

npm-install/config.js

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+export const CONFIG = {
+    name: "wiretap",
+    path: "./bin",
+    url: "https://github.com/pb33f/wiretap/releases/download/v{{version}}/{{bin_name}}_{{version}}_{{platform}}_{{arch}}.tar.gz",
+};
+export const ARCH_MAPPING = {
+    ia32: "i386",
+    x64: "x86_64",
+    arm64: "arm64",
+};
+export const PLATFORM_MAPPING = {
+    darwin: "darwin",
+    linux: "linux",
+    win32: "windows",
+};

npm-install/postinstall.js

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+import { createWriteStream } from "fs";
+import * as fs from "fs/promises";
+import fetch from "node-fetch";
+import { pipeline } from "stream/promises";
+import tar from "tar";
+import { execSync } from "child_process";
+
+import { ARCH_MAPPING, CONFIG, PLATFORM_MAPPING } from "./config.js";
+
+async function install() {
+    if (process.platform === "android") {
+        console.log("Installing, may take a moment...");
+        const cmd =
+            "pkg upgrade && pkg install golang git -y && git clone https://github.com/pb33f/wiertap.git && make build";
+        execSync(cmd, { encoding: "utf-8" });
+        console.log("Installation successful!");
+        return;
+    }
+    const packageJson = await fs.readFile("package.json").then(JSON.parse);
+    let version = packageJson.version;
+
+    if (typeof version !== "string") {
+        throw new Error("Missing version in package.json");
+    }
+
+    if (version[0] === "v") version = version.slice(1);
+
+    let { name: binName, path: binPath, url } = CONFIG;
+
+    url = url.replace(/{{arch}}/g, ARCH_MAPPING[process.arch]);
+    url = url.replace(/{{platform}}/g, PLATFORM_MAPPING[process.platform]);
+    url = url.replace(/{{version}}/g, version);
+    url = url.replace(/{{bin_name}}/g, binName);
+
+
+    console.log('fetching from URL', url)
+    const response = await fetch(url);
+    if (!response.ok) {
+        throw new Error("Failed fetching the binary: " + response.statusText);
+    }
+
+    const tarFile = "downloaded.tar.gz";
+
+    await fs.mkdir(binPath, { recursive: true });
+    await pipeline(response.body, createWriteStream(tarFile));
+    await tar.x({ file: tarFile, cwd: binPath });
+    await fs.rm(tarFile);
+}
+
+install()
+    .then(async () => {
+        process.exit(0);
+    })
+    .catch(async (err) => {
+        console.error(err);
+        process.exit(1);
+    });

package.json

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+{
+  "name": "@pb33f/wiretap",
+  "version": "0.0.0",
+  "description": "The world's coolest OpenAPI compliance API Proxy in the world",
+  "type": "module",
+  "author": "Princess Beef Heavy Industries, LLC / Quobix",
+  "license": "GPL-3.0",
+  "homepage": "https://pb33f.io/wiretap",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/pb33f/wiretap.git"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "scripts": {
+    "postinstall": "node ./npm-install/postinstall.js"
+  },
+  "bin": {
+    "wiretap": "bin/wiretap.js"
+  },
+  "files": [
+    "npm-install"
+  ],
+  "dependencies": {
+    "node-fetch": "^3.2.10",
+    "tar": "^6.1.11"
+  },
+  "bugs": {
+    "url": "https://github.com/pb33f/wiretap/issues"
+  },
+  "main": "index.js"
+}