From 60d95bad97b43bb73dda1ef86b605b1114ae1294 Mon Sep 17 00:00:00 2001
From: Moritz Langenstein <ml5717@ic.ac.uk>
Date: Mon, 25 Nov 2019 21:45:43 +0000
Subject: [PATCH] (ml5717) Send Uint8Array as base64 string to worker

---
 lib/index.js           |    7 +-
 lib/uint8array-json.js |   30 +
 lib/worker.js          |    9 +-
 package-lock.json      | 5819 ----------------------------------------
 src/index.js           |  110 -
 src/noop.js            |    1 -
 src/worker.js          |   70 -
 7 files changed, 39 insertions(+), 6007 deletions(-)
 create mode 100644 lib/uint8array-json.js
 delete mode 100644 package-lock.json
 delete mode 100644 src/index.js
 delete mode 100644 src/noop.js
 delete mode 100644 src/worker.js

diff --git a/lib/index.js b/lib/index.js
index 48d44ad..a3227a1 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -4,7 +4,8 @@ var _createClass = function () { function defineProperties(target, props) { for
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-var path = require("path"),
+var BJSON = require("./uint8array-json.js"),
+    path = require("path"),
     fork = require("child_process").fork,
     worker = path.join(__dirname, "worker.js"),
     events = /^(error|message)$/,
@@ -83,7 +84,7 @@ var Worker = function () {
 		});
 
 		this.child.on("message", function (msg) {
-			var message = JSON.parse(msg);
+			var message = BJSON.parse(msg);
 			var error = void 0;
 
 			if (!message.error && _this.onmessage) {
@@ -111,7 +112,7 @@ var Worker = function () {
 	}, {
 		key: "postMessage",
 		value: function postMessage(msg) {
-			this.child.send(JSON.stringify({ data: msg }, null, 0));
+			this.child.send(BJSON.stringify({ data: msg }, /*null,*/ 0));
 		}
 	}, {
 		key: "terminate",
diff --git a/lib/uint8array-json.js b/lib/uint8array-json.js
new file mode 100644
index 0000000..50b3199
--- /dev/null
+++ b/lib/uint8array-json.js
@@ -0,0 +1,30 @@
+// Adapted from https://github.com/jprichardson/buffer-json (MIT license)
+
+function stringify (value, space) {
+  return JSON.stringify(value, replacer, space)
+}
+
+function parse (text) {
+  return JSON.parse(text, reviver)
+}
+
+function replacer (key, value) {
+  if (value instanceof Uint8Array) {
+    return 'base64:' + Buffer.from(value).toString('base64')
+  }
+  return value
+}
+
+function reviver (key, value) {
+  if (typeof value == 'string' && value.startsWith('base64:')) {
+    return Uint8Array.from(Buffer.from(value.slice('base64:'.length), 'base64'))
+  }
+  return value
+}
+
+module.exports = {
+  stringify,
+  parse,
+  replacer,
+  reviver
+}
diff --git a/lib/worker.js b/lib/worker.js
index bc84a40..2a542ab 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -1,6 +1,7 @@
 "use strict";
 
-var fs = require("fs"),
+var BJSON = require("./uint8array-json.js"),
+    fs = require("fs"),
     path = require("path"),
     vm = require("vm"),
     noop = require(path.join(__dirname, "noop.js")),
@@ -27,11 +28,11 @@ process.once("message", function (obj) {
 			process.exit(0);
 		},
 		postMessage: function postMessage(msg) {
-			process.send(JSON.stringify({ data: msg }, null, 0));
+			process.send(BJSON.stringify({ data: msg }, /*null,*/ 0));
 		},
 		onmessage: void 0,
 		onerror: function onerror(err) {
-			process.send(JSON.stringify({ error: err.message, stack: err.stack }, null, 0));
+			process.send(BJSON.stringify({ error: err.message, stack: err.stack }, /*null,*/ 0));
 		},
 		addEventListener: function addEventListener(event, fn) {
 			if (events.test(event)) {
@@ -62,7 +63,7 @@ process.once("message", function (obj) {
 
 	process.on("message", function (msg) {
 		try {
-			(global.onmessage || global.self.onmessage || noop)(JSON.parse(msg));
+			(global.onmessage || global.self.onmessage || noop)(BJSON.parse(msg));
 		} catch (err) {
 			(global.onerror || global.self.onerror || noop)(err);
 		}
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index 68edbee..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,5819 +0,0 @@
-{
-  "name": "tiny-worker",
-  "version": "2.3.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "@babel/code-frame": {
-      "version": "7.5.5",
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-      "dev": true,
-      "requires": {
-        "@babel/highlight": "^7.0.0"
-      }
-    },
-    "@babel/generator": {
-      "version": "7.6.0",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.6.0.tgz",
-      "integrity": "sha512-Ms8Mo7YBdMMn1BYuNtKuP/z0TgEIhbcyB8HVR6PPNYp4P61lMsABiS4A3VG1qznjXVCf3r+fVHhm4efTYVsySA==",
-      "dev": true,
-      "requires": {
-        "@babel/types": "^7.6.0",
-        "jsesc": "^2.5.1",
-        "lodash": "^4.17.13",
-        "source-map": "^0.5.0",
-        "trim-right": "^1.0.1"
-      },
-      "dependencies": {
-        "jsesc": {
-          "version": "2.5.2",
-          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
-          "integrity": "sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==",
-          "dev": true
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-    "@babel/helper-function-name": {
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-      "dev": true
-    }
-  }
-}
diff --git a/src/index.js b/src/index.js
deleted file mode 100644
index 3cf7af8..0000000
--- a/src/index.js
+++ /dev/null
@@ -1,110 +0,0 @@
-const path = require("path"),
-	fork = require("child_process").fork,
-	worker = path.join(__dirname, "worker.js"),
-	events = /^(error|message)$/,
-	defaultPorts = {inspect: 9229, debug: 5858};
-let range = {min: 1, max: 300};
-
-class Worker {
-	constructor (arg, args = [], options = {cwd: process.cwd()}) {
-		let isfn = typeof arg === "function",
-			input = isfn ? arg.toString() : arg;
-
-		if (!options.cwd) {
-			options.cwd = process.cwd();
-		}
-
-		//get all debug related parameters
-		var debugVars = process.execArgv.filter(execArg => {
-			return (/(debug|inspect)/).test(execArg);
-		});
-		if (debugVars.length > 0 && !options.noDebugRedirection) {
-			if (!options.execArgv) { //if no execArgs are given copy all arguments
-				debugVars = Array.from(process.execArgv);
-				options.execArgv = [];
-			}
-
-			let inspectIndex = debugVars.findIndex(debugArg => { //get index of inspect parameter
-				return (/^--inspect(-brk)?(=\d+)?$/).test(debugArg);
-			});
-
-			let debugIndex = debugVars.findIndex(debugArg => { //get index of debug parameter
-				return (/^--debug(-brk)?(=\d+)?$/).test(debugArg);
-			});
-
-			let portIndex = inspectIndex >= 0 ? inspectIndex : debugIndex; //get index of port, inspect has higher priority
-
-			if (portIndex >= 0) {
-				var match = (/^--(debug|inspect)(?:-brk)?(?:=(\d+))?$/).exec(debugVars[portIndex]); //get port
-				var port = defaultPorts[match[1]];
-				if (match[2]) {
-					port = parseInt(match[2]);
-				}
-				debugVars[portIndex] = "--" + match[1] + "=" + (port + range.min + Math.floor(Math.random() * (range.max - range.min))); //new parameter
-
-				if (debugIndex >= 0 && debugIndex !== portIndex) { //remove "-brk" from debug if there
-					match = (/^(--debug)(?:-brk)?(.*)/).exec(debugVars[debugIndex]);
-					debugVars[debugIndex] = match[1] + (match[2] ? match[2] : "");
-				}
-			}
-			options.execArgv = options.execArgv.concat(debugVars);
-
-		}
-
-		delete options.noDebugRedirection;
-
-		this.child = fork(worker, args, options);
-		this.onerror = undefined;
-		this.onmessage = undefined;
-
-		this.child.on("error", e => {
-			if (this.onerror) {
-				this.onerror.call(this, e);
-			}
-		});
-
-		this.child.on("message", msg => {
-			const message = JSON.parse(msg);
-			let error;
-
-			if (!message.error && this.onmessage) {
-				this.onmessage.call(this, message);
-			}
-
-			if (message.error && this.onerror) {
-				error = new Error(message.error);
-				error.stack = message.stack;
-
-				this.onerror.call(this, error);
-			}
-		});
-
-		this.child.send({ input: input, isfn: isfn, cwd: options.cwd, esm: options.esm });
-	}
-
-	static setRange (min, max) {
-		if (min >= max) {
-			return false;
-		}
-		range.min = min;
-		range.max = max;
-
-		return true;
-	}
-
-	addEventListener (event, fn) {
-		if (events.test(event)) {
-			this["on" + event] = fn;
-		}
-	}
-
-	postMessage (msg) {
-		this.child.send(JSON.stringify({data: msg}, null, 0));
-	}
-
-	terminate () {
-		this.child.kill("SIGINT");
-	}
-}
-
-module.exports = Worker;
diff --git a/src/noop.js b/src/noop.js
deleted file mode 100644
index 0e0cebb..0000000
--- a/src/noop.js
+++ /dev/null
@@ -1 +0,0 @@
-module.exports = () => void 0;
diff --git a/src/worker.js b/src/worker.js
deleted file mode 100644
index 22c7168..0000000
--- a/src/worker.js
+++ /dev/null
@@ -1,70 +0,0 @@
-const fs = require("fs"),
-	path = require("path"),
-	vm = require("vm"),
-	noop = require(path.join(__dirname, "noop.js")),
-	events = /^(error|message)$/;
-
-function toFunction (arg) {
-	var __worker_evaluated_function_ = null;
-	eval("__worker_evaluated_function_ = (" + arg + ")"); // eslint-disable-line no-eval
-
-	return __worker_evaluated_function_;
-}
-
-// Bootstraps the Worker
-process.once("message", obj => {
-	const { isfn, input, esm, cwd } = obj;
-	const exp = isfn ? toFunction(input) : esm ? `require("${input}");` : fs.readFileSync(input, "utf8");
-
-	global.self = {
-		close: () => {
-			process.exit(0);
-		},
-		postMessage: msg => {
-			process.send(JSON.stringify({ data: msg }, null, 0));
-		},
-		onmessage: void 0,
-		onerror: err => {
-			process.send(JSON.stringify({ error: err.message, stack: err.stack }, null, 0));
-		},
-		addEventListener: (event, fn) => {
-			if (events.test(event)) {
-				global["on" + event] = global.self["on" + event] = fn;
-			}
-		}
-	};
-
-	global.__dirname = cwd;
-	global.__filename = __filename;
-	global.require = esm ? require("esm")(module) : require;
-
-	global.importScripts = (...files) => {
-		if (files.length > 0) {
-			vm.createScript(files.map(file => fs.readFileSync(file, "utf8")).join("\n")).runInThisContext();
-		}
-	};
-
-	Object.keys(global.self).forEach(key => {
-		global[key] = global.self[key];
-	});
-
-	process.on("message", msg => {
-		try {
-			(global.onmessage || global.self.onmessage || noop)(JSON.parse(msg));
-		} catch (err) {
-			(global.onerror || global.self.onerror || noop)(err);
-		}
-	});
-
-	process.on("error", err => {
-		(global.onerror || global.self.onerror || noop)(err);
-	});
-
-	if (typeof exp === "function") {
-		exp();
-	} else {
-		vm.createScript(exp).runInThisContext();
-	}
-});
-
-process.once("disconnect", () => process.exit());
-- 
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