Implemented option population.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@nottimtam/file-converter",
-	"version": "1.2.2",
+	"version": "1.2.3",
 	"description": "A headless, self-hostable, open-source file conversion express middleware.",
 	"main": "index.js",
 	"type": "module",

util/Job.js

@@ -62,26 +62,21 @@ export default class Job {
 	 * @returns {Object} The populated options.
 	 */
 	__populateOptions(options) {
-		return Object.fromEntries(
-			Object.entries(options).map(([name, value]) => {
-				// Find default value.
-				const option =
-					this.module &&
-					this.module.options.find(({ label }) => label === name);
-				const defaultValue = option && option.default;
-
-				// Populate default value when no value is provided.
-				if (
-					(value === undefined || value === null) &&
-					defaultValue !== undefined &&
-					defaultValue !== null
+		// Get all default values.
+		const defaults = Object.fromEntries(
+			this.module.options
+				.filter(
+					({ default: defaultValue }) =>
+						defaultValue !== undefined && defaultValue !== null
 				)
-					return [name, defaultValue];
-
-				// Return unpopulated value otherwise.
-				return [name, value];
-			})
+				.map(({ default: defaultValue, label }) => [
+					label,
+					defaultValue,
+				])
 		);
+
+		// Filter in selected options.
+		return { ...defaults, ...options };
 	}
 
 	/**

util/Module.js

@@ -18,7 +18,7 @@ class Option {
 	 * @param {string} config.description An optional option description.
 	 * @param {"string"|"number"|"boolean"} config.type The option's input type.
 	 * @param {string|number|boolean} config.default (optional) The option's default value.
-	 *  @param {boolean} config.required (optional) Whether or not to require a value to be provided for this option. Default `false`, if `false`, the option's `validateInput` callback will not be run when no value is provided.
+	 * @param {boolean} config.required (optional) Whether or not to require a value to be provided for this option. Default `false`, if `false`, the option's `validateInput` callback will not be run when no value is provided.
 	 * @param {function} config.validateInput An asynchronous callback function, used to validate the value provided to this option, which is passed as the first and only parameter. Should throw an exception if the value is invalid.
 	 * @param {Object}
 	 */
@@ -50,7 +50,11 @@ class Option {
 			this.description = config.description;
 		}
 
-		if (config.default) {
+		if (
+			config.hasOwnProperty("default") &&
+			config.default !== undefined &&
+			config.default !== null
+		) {
 			if (!Option.typeEnum.includes(typeof config.default))
 				throw new SyntaxError(
 					`Module.Option constructor config.default is invalid. Must be of type string, number, boolean, or a nullish value.`