diff --git a/src/core/ChefWorker.js b/src/core/ChefWorker.js
deleted file mode 100644
index b0ba31a0..00000000
--- a/src/core/ChefWorker.js
+++ /dev/null
@@ -1,289 +0,0 @@
-/**
- * Web Worker to handle communications between the front-end and the core.
- *
- * @author n1474335 [n1474335@gmail.com]
- * @copyright Crown Copyright 2017
- * @license Apache-2.0
- */
-
-import Chef from "./Chef.mjs";
-import OperationConfig from "./config/OperationConfig.json";
-import OpModules from "./config/modules/OpModules.mjs";
-
-// Add ">" to the start of all log messages in the Chef Worker
-import loglevelMessagePrefix from "loglevel-message-prefix";
-
-loglevelMessagePrefix(log, {
-    prefixes: [],
-    staticPrefixes: [">"],
-    prefixFormat: "%p"
-});
-
-
-// Set up Chef instance
-self.chef = new Chef();
-
-self.OpModules = OpModules;
-self.OperationConfig = OperationConfig;
-self.inputNum = -1;
-
-
-// Tell the app that the worker has loaded and is ready to operate
-self.postMessage({
-    action: "workerLoaded",
-    data: {}
-});
-
-/**
- * Respond to message from parent thread.
- *
- * inputNum is optional and only used for baking multiple inputs.
- * Defaults to -1 when one isn't sent with the bake message.
- *
- * Messages should have the following format:
- * {
- *     action: "bake" | "silentBake",
- *     data: {
- *         input: {string},
- *         recipeConfig: {[Object]},
- *         options: {Object},
- *         progress: {number},
- *         step: {boolean},
- *         [inputNum=-1]: {number}
- *     }
- * }
- */
-self.addEventListener("message", function(e) {
-    // Handle message
-    const r = e.data;
-    log.debug("ChefWorker receiving command '" + r.action + "'");
-
-    switch (r.action) {
-        case "bake":
-            bake(r.data);
-            break;
-        case "silentBake":
-            silentBake(r.data);
-            break;
-        case "getDishAs":
-            getDishAs(r.data);
-            break;
-        case "getDishTitle":
-            getDishTitle(r.data);
-            break;
-        case "docURL":
-            // Used to set the URL of the current document so that scripts can be
-            // imported into an inline worker.
-            self.docURL = r.data;
-            break;
-        case "highlight":
-            calculateHighlights(
-                r.data.recipeConfig,
-                r.data.direction,
-                r.data.pos
-            );
-            break;
-        case "setLogLevel":
-            log.setLevel(r.data, false);
-            break;
-        default:
-            break;
-    }
-});
-
-
-/**
- * Baking handler
- *
- * @param {Object} data
- */
-async function bake(data) {
-    // Ensure the relevant modules are loaded
-    self.loadRequiredModules(data.recipeConfig);
-    try {
-        self.inputNum = (data.inputNum !== undefined) ? data.inputNum : -1;
-        const response = await self.chef.bake(
-            data.input,          // The user's input
-            data.recipeConfig,   // The configuration of the recipe
-            data.options         // Options set by the user
-        );
-
-        const transferable = (data.input instanceof ArrayBuffer) ? [data.input] : undefined;
-        self.postMessage({
-            action: "bakeComplete",
-            data: Object.assign(response, {
-                id: data.id,
-                inputNum: data.inputNum,
-                bakeId: data.bakeId
-            })
-        }, transferable);
-
-    } catch (err) {
-        self.postMessage({
-            action: "bakeError",
-            data: {
-                error: err.message || err,
-                id: data.id,
-                inputNum: data.inputNum
-            }
-        });
-    }
-    self.inputNum = -1;
-}
-
-
-/**
- * Silent baking handler
- */
-function silentBake(data) {
-    const duration = self.chef.silentBake(data.recipeConfig);
-
-    self.postMessage({
-        action: "silentBakeComplete",
-        data: duration
-    });
-}
-
-
-/**
- * Translates the dish to a given type.
- */
-async function getDishAs(data) {
-    const value = await self.chef.getDishAs(data.dish, data.type);
-    const transferable = (data.type === "ArrayBuffer") ? [value] : undefined;
-    self.postMessage({
-        action: "dishReturned",
-        data: {
-            value: value,
-            id: data.id
-        }
-    }, transferable);
-}
-
-
-/**
- * Gets the dish title
- *
- * @param {object} data
- * @param {Dish} data.dish
- * @param {number} data.maxLength
- * @param {number} data.id
- */
-async function getDishTitle(data) {
-    const title = await self.chef.getDishTitle(data.dish, data.maxLength);
-    self.postMessage({
-        action: "dishReturned",
-        data: {
-            value: title,
-            id: data.id
-        }
-    });
-}
-
-
-/**
- * Calculates highlight offsets if possible.
- *
- * @param {Object[]} recipeConfig
- * @param {string} direction
- * @param {Object} pos - The position object for the highlight.
- * @param {number} pos.start - The start offset.
- * @param {number} pos.end - The end offset.
- */
-async function calculateHighlights(recipeConfig, direction, pos) {
-    pos = await self.chef.calculateHighlights(recipeConfig, direction, pos);
-
-    self.postMessage({
-        action: "highlightsCalculated",
-        data: pos
-    });
-}
-
-
-/**
- * Checks that all required modules are loaded and loads them if not.
- *
- * @param {Object} recipeConfig
- */
-self.loadRequiredModules = function(recipeConfig) {
-    recipeConfig.forEach(op => {
-        const module = self.OperationConfig[op.op].module;
-
-        if (!(module in OpModules)) {
-            log.info(`Loading ${module} module`);
-            self.sendStatusMessage(`Loading ${module} module`);
-            self.importScripts(`${self.docURL}/modules/${module}.js`);
-            self.sendStatusMessage("");
-        }
-    });
-};
-
-
-/**
- * Send status update to the app.
- *
- * @param {string} msg
- */
-self.sendStatusMessage = function(msg) {
-    self.postMessage({
-        action: "statusMessage",
-        data: {
-            message: msg,
-            inputNum: self.inputNum
-        }
-    });
-};
-
-
-/**
- * Send progress update to the app.
- *
- * @param {number} progress
- * @param {number} total
- */
-self.sendProgressMessage = function(progress, total) {
-    self.postMessage({
-        action: "progressMessage",
-        data: {
-            progress: progress,
-            total: total,
-            inputNum: self.inputNum
-        }
-    });
-};
-
-
-/**
- * Send an option value update to the app.
- *
- * @param {string} option
- * @param {*} value
- */
-self.setOption = function(option, value) {
-    self.postMessage({
-        action: "optionUpdate",
-        data: {
-            option: option,
-            value: value
-        }
-    });
-};
-
-
-/**
- * Send register values back to the app.
- *
- * @param {number} opIndex
- * @param {number} numPrevRegisters
- * @param {string[]} registers
- */
-self.setRegisters = function(opIndex, numPrevRegisters, registers) {
-    self.postMessage({
-        action: "setRegisters",
-        data: {
-            opIndex: opIndex,
-            numPrevRegisters: numPrevRegisters,
-            registers: registers
-        }
-    });
-};