WIP: refactor: migrate to ESM

.eslintrc.json

@@ -1,4 +1,19 @@
 {
   "root": true,
-  "extends": "hexo"
+  "extends": "hexo",
+  // TODO: should remove `@babel/core`, `@babel/eslint-parser` and `@babel/plugin-syntax-import-assertions`
+  //       after the ESLint supports `import.meta.url` and `assert { type: "json" }`
+  // https://github.com/eslint/eslint/discussions/15305
+  // https://github.com/babel/babel/blob/ad194013881727ca6b17a0e72cfea2d552eed049/eslint/babel-eslint-parser/README.md
+  "parser": "@babel/eslint-parser",
+  "parserOptions": {
+    "requireConfigFile": false,
+    "sourceType": "module",
+    "ecmaVersion": "2020",
+    "babelOptions": {
+      "plugins": [
+        "@babel/plugin-syntax-import-assertions"
+      ]
+    }
+  }
 }

.mocharc.yml

@@ -1 +1,4 @@
 color: true
+reporter: spec
+opts: false
+spec: "test/scripts/**/*.js"

lib/database.js

@@ -1,16 +1,16 @@
-'use strict';
-
-const JSONStream = require('JSONStream');
-const Promise = require('bluebird');
-const fs = require('graceful-fs');
-const Model = require('./model');
-const Schema = require('./schema');
-const SchemaType = require('./schematype');
-const WarehouseError = require('./error');
-const pkg = require('../package.json');
+import JSONStream from 'JSONStream';
+import Promise from 'bluebird';
+import fs from 'graceful-fs';
+import Model from './model.js';
+import Schema from './schema.js';
+import SchemaType from './schematype.js';
+import WarehouseError from './error.js';
+import pkg from '../package.json' assert { type: "json" };
+import log from 'hexo-log';
+import { Stream } from 'stream';
+
+const pipeline = Promise.promisify(Stream.pipeline);
 const { open } = fs.promises;
-const pipeline = Promise.promisify(require('stream').pipeline);
-const log = require('hexo-log')();
 
 let _writev;
 
@@ -69,7 +69,7 @@ async function exportAsync(database, path) {
   }
 }
 
-class Database {
+export default class Database {
 
   /**
    * Database constructor.
@@ -189,5 +189,3 @@ Database.Schema = Database.prototype.Schema;
 Database.prototype.SchemaType = SchemaType;
 Database.SchemaType = Database.prototype.SchemaType;
 Database.version = pkg.version;
-
-module.exports = Database;

lib/document.js

@@ -1,6 +1,5 @@
-'use strict';
-
-const cloneDeep = require('rfdc')();
+import rfdc from 'rfdc';
+const cloneDeep = rfdc();
 
 class Document {
 
@@ -101,4 +100,4 @@ function isGetter(obj, key) {
   return Object.getOwnPropertyDescriptor(obj, key).get;
 }
 
-module.exports = Document;
+export default Document;

lib/error.js

@@ -1,5 +1,3 @@
-'use strict';
-
 class WarehouseError extends Error {
 
   /**
@@ -22,4 +20,4 @@ WarehouseError.ID_EXIST = 'ID_EXIST';
 WarehouseError.ID_NOT_EXIST = 'ID_NOT_EXIST';
 WarehouseError.ID_UNDEFINED = 'ID_UNDEFINED';
 
-module.exports = WarehouseError;
+export default WarehouseError;

lib/error/population.js

@@ -1,9 +1,7 @@
-'use strict';
-
-const WarehouseError = require('../error');
+import WarehouseError from '../error.js';
 
 class PopulationError extends WarehouseError {}
 
 PopulationError.prototype.name = 'PopulationError';
 
-module.exports = PopulationError;
+export default PopulationError;

lib/error/validation.js

@@ -1,9 +1,7 @@
-'use strict';
-
-const WarehouseError = require('../error');
+import WarehouseError from '../error.js';
 
 class ValidationError extends WarehouseError {}
 
 ValidationError.prototype.name = 'ValidationError';
 
-module.exports = ValidationError;
+export default ValidationError;

lib/model.js

@@ -1,16 +1,15 @@
-'use strict';
-
-const { EventEmitter } = require('events');
-const cloneDeep = require('rfdc')();
-const Promise = require('bluebird');
-const { parseArgs, getProp, setGetter, shuffle } = require('./util');
-const Document = require('./document');
-const Query = require('./query');
-const Schema = require('./schema');
-const Types = require('./types');
-const WarehouseError = require('./error');
-const PopulationError = require('./error/population');
-const Mutex = require('./mutex');
+import { EventEmitter } from 'events';
+import rfdc from 'rfdc';
+const cloneDeep = rfdc();
+import Promise from 'bluebird';
+import { parseArgs, getProp, setGetter, shuffle } from './util.js';
+import Document from './document.js';
+import Query from './query.js';
+import Schema from './schema.js';
+import * as Types from './types/index.js';
+import WarehouseError from './error.js';
+import PopulationError from './error/population.js';
+import Mutex from './mutex.js';
 
 class Model extends EventEmitter {
 
@@ -963,4 +962,4 @@ Model.prototype.each = Model.prototype.forEach;
 
 Model.prototype.random = Model.prototype.shuffle;
 
-module.exports = Model;
+export default Model;

lib/mutex.js

@@ -1,5 +1,3 @@
-'use strict';
-
 class Mutex {
   constructor() {
     this._locked = false;
@@ -29,4 +27,4 @@ class Mutex {
   }
 }
 
-module.exports = Mutex;
+export default Mutex;

lib/query.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const Promise = require('bluebird');
-const { parseArgs, shuffle } = require('./util');
+import Promise from 'bluebird';
+import { parseArgs, shuffle } from './util.js';
 
 class Query {
 
@@ -387,4 +385,4 @@ Query.prototype.each = Query.prototype.forEach;
 
 Query.prototype.random = Query.prototype.shuffle;
 
-module.exports = Query;
+export default Query;

lib/schema.js

@@ -1,11 +1,9 @@
-'use strict';
-
-const SchemaType = require('./schematype');
-const Types = require('./types');
-const Promise = require('bluebird');
-const { getProp, setProp, delProp } = require('./util');
-const PopulationError = require('./error/population');
-const { isPlainObject } = require('is-plain-object');
+import SchemaType from './schematype.js';
+import * as Types from './types/index.js';
+import Promise from 'bluebird';
+import { getProp, setProp, delProp } from './util.js';
+import PopulationError from './error/population.js';
+import { isPlainObject } from 'is-plain-object';
 
 /**
  * @callback queryFilterCallback
@@ -792,4 +790,4 @@ class Schema {
 Schema.prototype.Types = Types;
 Schema.Types = Schema.prototype.Types;
 
-module.exports = Schema;
+export default Schema;

lib/schematype.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const { setProp } = require('./util');
-const ValidationError = require('./error/validation');
+import { setProp } from './util.js';
+import ValidationError from './error/validation.js';
 
 /**
  * This is the basic schema type.
@@ -292,4 +290,4 @@ SchemaType.prototype.q$max = SchemaType.prototype.q$lte;
 
 SchemaType.prototype.q$min = SchemaType.prototype.q$gte;
 
-module.exports = SchemaType;
+export default SchemaType;

lib/types/array.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 const { isArray } = Array;
 
@@ -378,4 +376,4 @@ SchemaTypeArray.prototype.u$append = SchemaTypeArray.prototype.u$push;
 
 SchemaTypeArray.prototype.u$prepend = SchemaTypeArray.prototype.u$unshift;
 
-module.exports = SchemaTypeArray;
+export default SchemaTypeArray;

lib/types/boolean.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Boolean schema type.
@@ -63,4 +61,4 @@ class SchemaTypeBoolean extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeBoolean;
+export default SchemaTypeBoolean;

lib/types/buffer.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Boolean schema type.
@@ -107,4 +105,4 @@ class SchemaTypeBuffer extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeBuffer;
+export default SchemaTypeBuffer;

lib/types/cuid.js

@@ -1,8 +1,6 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const cuid = require('cuid');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import cuid from 'cuid';
+import ValidationError from '../error/validation.js';
 
 /**
  * [CUID](https://github.com/ericelliott/cuid) schema type.
@@ -41,4 +39,4 @@ class SchemaTypeCUID extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeCUID;
+export default SchemaTypeCUID;

lib/types/date.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Date schema type.
@@ -154,4 +152,4 @@ class SchemaTypeDate extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeDate;
+export default SchemaTypeDate;

lib/types/enum.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Enum schema type.
@@ -41,4 +39,4 @@ class SchemaTypeEnum extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeEnum;
+export default SchemaTypeEnum;

lib/types/index.js

@@ -1,14 +1,27 @@
-'use strict';
+import SchemaType from '../schematype.js';
+import SchemaTypeString from './string.js';
+import SchemaTypeNumber from './number.js';
+import SchemaTypeBoolean from './boolean.js';
+import SchemaTypeArray from './array.js';
+import SchemaTypeObject from './object.js';
+import SchemaTypeDate from './date.js';
+import SchemaTypeVirtual from './virtual.js';
+import SchemaTypeCUID from './cuid.js';
+import SchemaTypeEnum from './enum.js';
+import SchemaTypeInteger from './integer.js';
+import SchemaTypeBuffer from './buffer.js';
 
-exports.Mixed = require('../schematype');
-exports.String = require('./string');
-exports.Number = require('./number');
-exports.Boolean = require('./boolean');
-exports.Array = require('./array');
-exports.Object = require('./object');
-exports.Date = require('./date');
-exports.Virtual = require('./virtual');
-exports.CUID = require('./cuid');
-exports.Enum = require('./enum');
-exports.Integer = require('./integer');
-exports.Buffer = require('./buffer');
+export {
+  SchemaType as Mixed,
+  SchemaTypeString as String,
+  SchemaTypeNumber as Number,
+  SchemaTypeBoolean as Boolean,
+  SchemaTypeArray as Array,
+  SchemaTypeObject as Object,
+  SchemaTypeDate as Date,
+  SchemaTypeVirtual as Virtual,
+  SchemaTypeCUID as CUID,
+  SchemaTypeEnum as Enum,
+  SchemaTypeInteger as Integer,
+  SchemaTypeBuffer as Buffer
+};

lib/types/integer.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaTypeNumber = require('./number');
-const ValidationError = require('../error/validation');
+import SchemaTypeNumber from './number.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Integer schema type.
@@ -39,4 +37,4 @@ class SchemaTypeInteger extends SchemaTypeNumber {
   }
 }
 
-module.exports = SchemaTypeInteger;
+export default SchemaTypeInteger;

lib/types/number.js

@@ -1,7 +1,5 @@
-'use strict';
-
-const SchemaType = require('../schematype');
-const ValidationError = require('../error/validation');
+import SchemaType from '../schematype.js';
+import ValidationError from '../error/validation.js';
 
 /**
  * Number schema type.
@@ -125,4 +123,4 @@ class SchemaTypeNumber extends SchemaType {
   }
 }
 
-module.exports = SchemaTypeNumber;
+export default SchemaTypeNumber;