web: Use monorepo package utilities to build packages (#14159)

* web: Format live reload package.

* web: Format package.json.

* web: Revise globals.

* web: Build entrypoints with a single ESBuild context. Clean up entrypoints.

* web: WIP Prepare monorepo package for use.

* web: Update build paths. Fix types.

* web: WIP Add monorepo dependency.

* web: Use monorepo utilities when building.

* web: Fix issue where linters collide. Update ignore file.

- Remove unused sort override for polyfills.

* core: Prepare repo for NPM workspaces.

web/packages/monorepo/build.js

@@ -0,0 +1,42 @@
+/**
+ * @file Utility functions for building and copying files.
+ */
+
+/**
+ * A source environment variable, which can be a string, number, boolean, null, or undefined.
+ * @typedef {string | number | boolean | null | undefined} EnvironmentVariable
+ */
+
+/**
+ * A type helper for serializing environment variables.
+ *
+ * @template {EnvironmentVariable} T
+ * @typedef {T extends string ? `"${T}"` : T} JSONify
+ */
+
+/**
+ * Given an object of environment variables, returns a new object with the same keys and values, but
+ * with the values serialized as strings.
+ *
+ * @template {Record<string, EnvironmentVariable>} EnvRecord
+ * @template {string} [Prefix='process.env.']
+ *
+ * @param {EnvRecord} input
+ * @param {Prefix} [prefix='process.env.']
+ *
+ * @returns {{[K in keyof EnvRecord as `${Prefix}${K}`]: JSONify<EnvRecord[K]>}}
+ */
+export function serializeEnvironmentVars(input, prefix = /** @type {Prefix} */ ("process.env.")) {
+    /**
+     * @type {Record<string, string>}
+     */
+    const env = {};
+
+    for (const [key, value] of Object.entries(input)) {
+        const namespaceKey = prefix + key;
+
+        env[namespaceKey] = JSON.stringify(value || "");
+    }
+
+    return /** @type {any} */ (env);
+}