Fixed linting errors

.eslintignore

@@ -1,3 +1,4 @@
 coverage/**/*
 docs/**/*
+examples/**
 

lib/cache.js

@@ -25,10 +25,10 @@ class Cache {
 	 * @param {string} opts.cacheName - The name of the cache to use
 	 * @param {any} opts.init - The connection options provided
 	 **/
-	initialize(opts) {
-		let {url, cacheName: name} = opts;
+	initialize(options) {
+		let {url, cacheName: name} = options;
 		// If the option is a falsey value or empty object use null as initial value
-		const init = compare(opts.init, null) ? null : opts.init;
+		const init = compare(options.init, null) ? null : options.init;
 
 		// If a cache under that name does not exist create one
 		if (!this._connections[name]) {
@@ -65,7 +65,7 @@ class Cache {
 		for (const prop in cached) {
 			if (hasOwn(cached, prop)) {
 				const current = cached[prop];
-				if (compare(current.init, opts.init)) {
+				if (compare(current.init, options.init)) {
 					return {
 						url,
 						name,

lib/gridfs.js

@@ -258,7 +258,7 @@ class GridFSStorage extends EventEmitter {
 	 * @param {object} opts - The stream options
 	 * @return {GridStoreStream|GridFSBucketWriteStream}
 	 */
-	createStream(opts) {
+	createStream(options) {
 		let gfs;
 		let settings;
 		const {GridStore} = mongodb;
@@ -268,27 +268,27 @@ class GridFSStorage extends EventEmitter {
 			// `disableMD5` is not supported in GridStore
 			settings = {
 				/* eslint-disable-next-line camelcase */
-				chunk_size: opts.chunkSize,
-				metadata: opts.metadata,
+				chunk_size: options.chunkSize,
+				metadata: options.metadata,
 				/* eslint-disable-next-line camelcase */
-				content_type: opts.contentType,
-				root: opts.bucketName,
-				aliases: opts.aliases
+				content_type: options.contentType,
+				root: options.bucketName,
+				aliases: options.aliases
 			};
-			gfs = new GridStore(this.db, opts.id, opts.filename, 'w', settings);
+			gfs = new GridStore(this.db, options.id, options.filename, 'w', settings);
 			return gfs.stream();
 		}
 
 		settings = {
-			id: opts.id,
-			chunkSizeBytes: opts.chunkSize,
-			contentType: opts.contentType,
-			metadata: opts.metadata,
-			aliases: opts.aliases,
-			disableMD5: opts.disableMD5
+			id: options.id,
+			chunkSizeBytes: options.chunkSize,
+			contentType: options.contentType,
+			metadata: options.metadata,
+			aliases: options.aliases,
+			disableMD5: options.disableMD5
 		};
-		gfs = new GridFSBucket(this.db, {bucketName: opts.bucketName});
-		return gfs.openUploadStream(opts.filename, settings);
+		gfs = new GridFSBucket(this.db, {bucketName: options.bucketName});
+		return gfs.openUploadStream(options.filename, settings);
 	}
 
 	/**
@@ -297,13 +297,13 @@ class GridFSStorage extends EventEmitter {
 	 * @param {File} file - The uploaded file stream
 	 * @param {function} cb - A standard node callback to signal the end of the upload or an error
 	 **/
-	_handleFile(req, file, cb) {
+	_handleFile(request, file, cb) {
 		if (this.connecting) {
 			// Triggers file storage buffering if the connection is not ready yet
 			// Connection listeners. Only one of them fires, the other is cleaned after the event.
 			const connectionListener = () => {
 				this.removeListener('connectionFailed', failedListener);
-				this._store(req, file, cb);
+				this._store(request, file, cb);
 			};
 
 			const failedListener = err => {
@@ -316,7 +316,7 @@ class GridFSStorage extends EventEmitter {
 		} else {
 			this._updateConnectionStatus();
 			if (this.connected) {
-				this._store(req, file, cb);
+				this._store(request, file, cb);
 			} else {
 				return cb(
 					new Error('The database connection must be open to store files')
@@ -331,7 +331,7 @@ class GridFSStorage extends EventEmitter {
 	 * @param {File} file - The uploaded file stream
 	 * @param {function} cb - A standard node callback to signal the end of the upload or an error
 	 **/
-	_removeFile(req, file, cb) {
+	_removeFile(request, file, cb) {
 		let bucket;
 		let options;
 		const {GridStore} = mongodb;
@@ -354,9 +354,9 @@ class GridFSStorage extends EventEmitter {
 	 * @param {function} cb - A callback function to transfer control back to the multer module
 	 * @private
 	 */
-	_store(req, file, cb) {
+	_store(request, file, cb) {
 		const readStream = file.stream;
-		this._generate(req, file)
+		this._generate(request, file)
 			/* eslint-disable-next-line promise/prefer-await-to-then */
 			.then(fileSettings => {
 				let settings;
@@ -384,11 +384,11 @@ class GridFSStorage extends EventEmitter {
 				);
 			})
 			/* eslint-disable-next-line promise/prefer-await-to-then */
-			.then(streamOpts => {
+			.then(streamOptions => {
 				let store;
 
 				const emitError = streamError => {
-					this.emit('streamError', streamError, streamOpts);
+					this.emit('streamError', streamError, streamOptions);
 					cb(streamError);
 				};
 
@@ -397,7 +397,7 @@ class GridFSStorage extends EventEmitter {
 						id: f._id,
 						filename: f.filename,
 						metadata: f.metadata || null,
-						bucketName: streamOpts.bucketName,
+						bucketName: streamOptions.bucketName,
 						chunkSize: f.chunkSize,
 						size: f.length,
 						md5: f.md5,
@@ -408,7 +408,7 @@ class GridFSStorage extends EventEmitter {
 					cb(null, storedFile);
 				};
 
-				const writeStream = this.createStream(streamOpts);
+				const writeStream = this.createStream(streamOptions);
 
 				// Multer already handles the error event on the readable stream(Busboy).
 				// Invoking the callback with an error will cause file removal and aborting routines to be called twice
@@ -449,7 +449,7 @@ class GridFSStorage extends EventEmitter {
 	 * @param {File} file - The uploaded file stream as received in _handleFile
 	 * @return {Promise<any | {}>} A promise with the value generated by the file function
 	 **/
-	async _generate(req, file) {
+	async _generate(request, file) {
 		let result;
 		let generator;
 		let isGen = false;
@@ -460,15 +460,15 @@ class GridFSStorage extends EventEmitter {
 
 		if (isGeneratorFn(this._file)) {
 			isGen = true;
-			generator = this._file(req, file);
+			generator = this._file(request, file);
 			this._file = generator;
 			result = generator.next();
 		} else if (isGenerator(this._file)) {
 			isGen = true;
 			generator = this._file;
-			result = generator.next([req, file]);
+			result = generator.next([request, file]);
 		} else {
-			result = this._file(req, file);
+			result = this._file(request, file);
 		}
 
 		return GridFSStorage._handleResult(result, isGen);
@@ -533,17 +533,17 @@ class GridFSStorage extends EventEmitter {
 	 */
 	static async _mergeProps(extra, fileSettings) {
 		// If the filename is not provided generate one
-		const prev = await (fileSettings.filename
+		const previous = await (fileSettings.filename
 			? {}
 			: GridFSStorage.generateBytes());
 		// If no id is provided generate one
 		// If an error occurs the emitted file information will contain the id
 		const hasId = fileSettings.id;
 		if (!hasId) {
-			prev.id = new ObjectID();
+			previous.id = new ObjectID();
 		}
 
-		return {...prev, ...defaults, ...extra, ...fileSettings};
+		return {...previous, ...defaults, ...extra, ...fileSettings};
 	}
 
 	/**