Move bg/js (#1387)

* Move bg/js/anki.js to js/comm/anki.js

* Move bg/js/mecab.js to js/comm/mecab.js

* Move bg/js/search-main.js to js/display/search-main.js

* Move bg/js/template-patcher.js to js/templates/template-patcher.js

* Move bg/js/template-renderer-frame-api.js to js/templates/template-renderer-frame-api.js

* Move bg/js/template-renderer-frame-main.js to js/templates/template-renderer-frame-main.js

* Move bg/js/template-renderer-proxy.js to js/templates/template-renderer-proxy.js

* Move bg/js/template-renderer.js to js/templates/template-renderer.js

* Move bg/js/media-utility.js to js/media/media-utility.js

* Move bg/js/native-simple-dom-parser.js to js/dom/native-simple-dom-parser.js

* Move bg/js/simple-dom-parser.js to js/dom/simple-dom-parser.js

* Move bg/js/audio-downloader.js to js/media/audio-downloader.js

* Move bg/js/deinflector.js to js/language/deinflector.js

* Move bg/js/backend.js to js/background/backend.js

* Move bg/js/translator.js to js/language/translator.js

* Move bg/js/search-display-controller.js to js/display/search-display-controller.js

* Move bg/js/request-builder.js to js/background/request-builder.js

* Move bg/js/text-source-map.js to js/general/text-source-map.js

* Move bg/js/clipboard-reader.js to js/comm/clipboard-reader.js

* Move bg/js/clipboard-monitor.js to js/comm/clipboard-monitor.js

* Move bg/js/query-parser.js to js/display/query-parser.js

* Move bg/js/profile-conditions.js to js/background/profile-conditions.js

* Move bg/js/dictionary-database.js to js/language/dictionary-database.js

* Move bg/js/dictionary-importer.js to js/language/dictionary-importer.js

* Move bg/js/anki-note-builder.js to js/data/anki-note-builder.js

* Move bg/js/anki-note-data.js to js/data/anki-note-data.js

* Move bg/js/database.js to js/data/database.js

* Move bg/js/json-schema.js to js/data/json-schema.js

* Move bg/js/options.js to js/data/options-util.js

* Move bg/js/background-main.js to js/background/background-main.js

* Move bg/js/permissions-util.js to js/data/permissions-util.js

* Move bg/js/context-main.js to js/pages/action-popup-main.js

* Move bg/js/generic-page-main.js to js/pages/generic-page-main.js

* Move bg/js/info-main.js to js/pages/info-main.js

* Move bg/js/permissions-main.js to js/pages/permissions-main.js

* Move bg/js/welcome-main.js to js/pages/welcome-main.js

1 files changed, 0 insertions, 757 deletions

diff --git a/ext/bg/js/json-schema.js b/ext/bg/js/json-schema.js
deleted file mode 100644
index 7b6b9c53..00000000
--- a/ext/bg/js/json-schema.js
+++ /dev/null
@@ -1,757 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * CacheMap
- */
-
-class JsonSchemaProxyHandler {
-    constructor(schema, jsonSchemaValidator) {
-        this._schema = schema;
-        this._jsonSchemaValidator = jsonSchemaValidator;
-    }
-
-    getPrototypeOf(target) {
-        return Object.getPrototypeOf(target);
-    }
-
-    setPrototypeOf() {
-        throw new Error('setPrototypeOf not supported');
-    }
-
-    isExtensible(target) {
-        return Object.isExtensible(target);
-    }
-
-    preventExtensions(target) {
-        Object.preventExtensions(target);
-        return true;
-    }
-
-    getOwnPropertyDescriptor(target, property) {
-        return Object.getOwnPropertyDescriptor(target, property);
-    }
-
-    defineProperty() {
-        throw new Error('defineProperty not supported');
-    }
-
-    has(target, property) {
-        return property in target;
-    }
-
-    get(target, property) {
-        if (typeof property === 'symbol') {
-            return target[property];
-        }
-
-        if (Array.isArray(target)) {
-            if (typeof property === 'string' && /^\d+$/.test(property)) {
-                property = parseInt(property, 10);
-            } else if (typeof property === 'string') {
-                return target[property];
-            }
-        }
-
-        const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target);
-        if (propertySchema === null) {
-            return;
-        }
-
-        const value = target[property];
-        return value !== null && typeof value === 'object' ? this._jsonSchemaValidator.createProxy(value, propertySchema) : value;
-    }
-
-    set(target, property, value) {
-        if (Array.isArray(target)) {
-            if (typeof property === 'string' && /^\d+$/.test(property)) {
-                property = parseInt(property, 10);
-                if (property > target.length) {
-                    throw new Error('Array index out of range');
-                }
-            } else if (typeof property === 'string') {
-                target[property] = value;
-                return true;
-            }
-        }
-
-        const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target);
-        if (propertySchema === null) {
-            throw new Error(`Property ${property} not supported`);
-        }
-
-        value = clone(value);
-
-        this._jsonSchemaValidator.validate(value, propertySchema);
-
-        target[property] = value;
-        return true;
-    }
-
-    deleteProperty(target, property) {
-        const required = this._schema.required;
-        if (Array.isArray(required) && required.includes(property)) {
-            throw new Error(`${property} cannot be deleted`);
-        }
-        return Reflect.deleteProperty(target, property);
-    }
-
-    ownKeys(target) {
-        return Reflect.ownKeys(target);
-    }
-
-    apply() {
-        throw new Error('apply not supported');
-    }
-
-    construct() {
-        throw new Error('construct not supported');
-    }
-}
-
-class JsonSchemaValidator {
-    constructor() {
-        this._regexCache = new CacheMap(100);
-    }
-
-    createProxy(target, schema) {
-        return new Proxy(target, new JsonSchemaProxyHandler(schema, this));
-    }
-
-    isValid(value, schema) {
-        try {
-            this.validate(value, schema);
-            return true;
-        } catch (e) {
-            return false;
-        }
-    }
-
-    validate(value, schema) {
-        const info = new JsonSchemaTraversalInfo(value, schema);
-        this._validate(value, schema, info);
-    }
-
-    getValidValueOrDefault(schema, value) {
-        const info = new JsonSchemaTraversalInfo(value, schema);
-        return this._getValidValueOrDefault(schema, value, info);
-    }
-
-    getPropertySchema(schema, property, value) {
-        return this._getPropertySchema(schema, property, value, null);
-    }
-
-    clearCache() {
-        this._regexCache.clear();
-    }
-
-    // Private
-
-    _getPropertySchema(schema, property, value, path) {
-        const type = this._getSchemaOrValueType(schema, value);
-        switch (type) {
-            case 'object':
-            {
-                const properties = schema.properties;
-                if (this._isObject(properties)) {
-                    const propertySchema = properties[property];
-                    if (this._isObject(propertySchema)) {
-                        if (path !== null) { path.push(['properties', properties], [property, propertySchema]); }
-                        return propertySchema;
-                    }
-                }
-
-                const additionalProperties = schema.additionalProperties;
-                if (additionalProperties === false) {
-                    return null;
-                } else if (this._isObject(additionalProperties)) {
-                    if (path !== null) { path.push(['additionalProperties', additionalProperties]); }
-                    return additionalProperties;
-                } else {
-                    const result = JsonSchemaValidator.unconstrainedSchema;
-                    if (path !== null) { path.push([null, result]); }
-                    return result;
-                }
-            }
-            case 'array':
-            {
-                const items = schema.items;
-                if (this._isObject(items)) {
-                    return items;
-                }
-                if (Array.isArray(items)) {
-                    if (property >= 0 && property < items.length) {
-                        const propertySchema = items[property];
-                        if (this._isObject(propertySchema)) {
-                            if (path !== null) { path.push(['items', items], [property, propertySchema]); }
-                            return propertySchema;
-                        }
-                    }
-                }
-
-                const additionalItems = schema.additionalItems;
-                if (additionalItems === false) {
-                    return null;
-                } else if (this._isObject(additionalItems)) {
-                    if (path !== null) { path.push(['additionalItems', additionalItems]); }
-                    return additionalItems;
-                } else {
-                    const result = JsonSchemaValidator.unconstrainedSchema;
-                    if (path !== null) { path.push([null, result]); }
-                    return result;
-                }
-            }
-            default:
-                return null;
-        }
-    }
-
-    _getSchemaOrValueType(schema, value) {
-        const type = schema.type;
-
-        if (Array.isArray(type)) {
-            if (typeof value !== 'undefined') {
-                const valueType = this._getValueType(value);
-                if (type.indexOf(valueType) >= 0) {
-                    return valueType;
-                }
-            }
-            return null;
-        }
-
-        if (typeof type === 'undefined') {
-            if (typeof value !== 'undefined') {
-                return this._getValueType(value);
-            }
-            return null;
-        }
-
-        return type;
-    }
-
-    _validate(value, schema, info) {
-        this._validateSingleSchema(value, schema, info);
-        this._validateConditional(value, schema, info);
-        this._validateAllOf(value, schema, info);
-        this._validateAnyOf(value, schema, info);
-        this._validateOneOf(value, schema, info);
-        this._validateNoneOf(value, schema, info);
-    }
-
-    _validateConditional(value, schema, info) {
-        const ifSchema = schema.if;
-        if (!this._isObject(ifSchema)) { return; }
-
-        let okay = true;
-        info.schemaPush('if', ifSchema);
-        try {
-            this._validate(value, ifSchema, info);
-        } catch (e) {
-            okay = false;
-        }
-        info.schemaPop();
-
-        const nextSchema = okay ? schema.then : schema.else;
-        if (this._isObject(nextSchema)) {
-            info.schemaPush(okay ? 'then' : 'else', nextSchema);
-            this._validate(value, nextSchema, info);
-            info.schemaPop();
-        }
-    }
-
-    _validateAllOf(value, schema, info) {
-        const subSchemas = schema.allOf;
-        if (!Array.isArray(subSchemas)) { return; }
-
-        info.schemaPush('allOf', subSchemas);
-        for (let i = 0; i < subSchemas.length; ++i) {
-            const subSchema = subSchemas[i];
-            info.schemaPush(i, subSchema);
-            this._validate(value, subSchema, info);
-            info.schemaPop();
-        }
-        info.schemaPop();
-    }
-
-    _validateAnyOf(value, schema, info) {
-        const subSchemas = schema.anyOf;
-        if (!Array.isArray(subSchemas)) { return; }
-
-        info.schemaPush('anyOf', subSchemas);
-        for (let i = 0; i < subSchemas.length; ++i) {
-            const subSchema = subSchemas[i];
-            info.schemaPush(i, subSchema);
-            try {
-                this._validate(value, subSchema, info);
-                return;
-            } catch (e) {
-                // NOP
-            }
-            info.schemaPop();
-        }
-
-        throw new JsonSchemaValidationError('0 anyOf schemas matched', value, schema, info);
-        // info.schemaPop(); // Unreachable
-    }
-
-    _validateOneOf(value, schema, info) {
-        const subSchemas = schema.oneOf;
-        if (!Array.isArray(subSchemas)) { return; }
-
-        info.schemaPush('oneOf', subSchemas);
-        let count = 0;
-        for (let i = 0; i < subSchemas.length; ++i) {
-            const subSchema = subSchemas[i];
-            info.schemaPush(i, subSchema);
-            try {
-                this._validate(value, subSchema, info);
-                ++count;
-            } catch (e) {
-                // NOP
-            }
-            info.schemaPop();
-        }
-
-        if (count !== 1) {
-            throw new JsonSchemaValidationError(`${count} oneOf schemas matched`, value, schema, info);
-        }
-
-        info.schemaPop();
-    }
-
-    _validateNoneOf(value, schema, info) {
-        const subSchemas = schema.not;
-        if (!Array.isArray(subSchemas)) { return; }
-
-        info.schemaPush('not', subSchemas);
-        for (let i = 0; i < subSchemas.length; ++i) {
-            const subSchema = subSchemas[i];
-            info.schemaPush(i, subSchema);
-            try {
-                this._validate(value, subSchema, info);
-            } catch (e) {
-                info.schemaPop();
-                continue;
-            }
-            throw new JsonSchemaValidationError(`not[${i}] schema matched`, value, schema, info);
-        }
-        info.schemaPop();
-    }
-
-    _validateSingleSchema(value, schema, info) {
-        const type = this._getValueType(value);
-        const schemaType = schema.type;
-        if (!this._isValueTypeAny(value, type, schemaType)) {
-            throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema, info);
-        }
-
-        const schemaConst = schema.const;
-        if (typeof schemaConst !== 'undefined' && !this._valuesAreEqual(value, schemaConst)) {
-            throw new JsonSchemaValidationError('Invalid constant value', value, schema, info);
-        }
-
-        const schemaEnum = schema.enum;
-        if (Array.isArray(schemaEnum) && !this._valuesAreEqualAny(value, schemaEnum)) {
-            throw new JsonSchemaValidationError('Invalid enum value', value, schema, info);
-        }
-
-        switch (type) {
-            case 'number':
-                this._validateNumber(value, schema, info);
-                break;
-            case 'string':
-                this._validateString(value, schema, info);
-                break;
-            case 'array':
-                this._validateArray(value, schema, info);
-                break;
-            case 'object':
-                this._validateObject(value, schema, info);
-                break;
-        }
-    }
-
-    _validateNumber(value, schema, info) {
-        const multipleOf = schema.multipleOf;
-        if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) {
-            throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema, info);
-        }
-
-        const minimum = schema.minimum;
-        if (typeof minimum === 'number' && value < minimum) {
-            throw new JsonSchemaValidationError(`Number is less than ${minimum}`, value, schema, info);
-        }
-
-        const exclusiveMinimum = schema.exclusiveMinimum;
-        if (typeof exclusiveMinimum === 'number' && value <= exclusiveMinimum) {
-            throw new JsonSchemaValidationError(`Number is less than or equal to ${exclusiveMinimum}`, value, schema, info);
-        }
-
-        const maximum = schema.maximum;
-        if (typeof maximum === 'number' && value > maximum) {
-            throw new JsonSchemaValidationError(`Number is greater than ${maximum}`, value, schema, info);
-        }
-
-        const exclusiveMaximum = schema.exclusiveMaximum;
-        if (typeof exclusiveMaximum === 'number' && value >= exclusiveMaximum) {
-            throw new JsonSchemaValidationError(`Number is greater than or equal to ${exclusiveMaximum}`, value, schema, info);
-        }
-    }
-
-    _validateString(value, schema, info) {
-        const minLength = schema.minLength;
-        if (typeof minLength === 'number' && value.length < minLength) {
-            throw new JsonSchemaValidationError('String length too short', value, schema, info);
-        }
-
-        const maxLength = schema.maxLength;
-        if (typeof maxLength === 'number' && value.length > maxLength) {
-            throw new JsonSchemaValidationError('String length too long', value, schema, info);
-        }
-
-        const pattern = schema.pattern;
-        if (typeof pattern === 'string') {
-            let patternFlags = schema.patternFlags;
-            if (typeof patternFlags !== 'string') { patternFlags = ''; }
-
-            let regex;
-            try {
-                regex = this._getRegex(pattern, patternFlags);
-            } catch (e) {
-                throw new JsonSchemaValidationError(`Pattern is invalid (${e.message})`, value, schema, info);
-            }
-
-            if (!regex.test(value)) {
-                throw new JsonSchemaValidationError('Pattern match failed', value, schema, info);
-            }
-        }
-    }
-
-    _validateArray(value, schema, info) {
-        const minItems = schema.minItems;
-        if (typeof minItems === 'number' && value.length < minItems) {
-            throw new JsonSchemaValidationError('Array length too short', value, schema, info);
-        }
-
-        const maxItems = schema.maxItems;
-        if (typeof maxItems === 'number' && value.length > maxItems) {
-            throw new JsonSchemaValidationError('Array length too long', value, schema, info);
-        }
-
-        this._validateArrayContains(value, schema, info);
-
-        for (let i = 0, ii = value.length; i < ii; ++i) {
-            const schemaPath = [];
-            const propertySchema = this._getPropertySchema(schema, i, value, schemaPath);
-            if (propertySchema === null) {
-                throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema, info);
-            }
-
-            const propertyValue = value[i];
-
-            for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
-            info.valuePush(i, propertyValue);
-            this._validate(propertyValue, propertySchema, info);
-            info.valuePop();
-            for (let j = 0, jj = schemaPath.length; j < jj; ++j) { info.schemaPop(); }
-        }
-    }
-
-    _validateArrayContains(value, schema, info) {
-        const containsSchema = schema.contains;
-        if (!this._isObject(containsSchema)) { return; }
-
-        info.schemaPush('contains', containsSchema);
-        for (let i = 0, ii = value.length; i < ii; ++i) {
-            const propertyValue = value[i];
-            info.valuePush(i, propertyValue);
-            try {
-                this._validate(propertyValue, containsSchema, info);
-                info.schemaPop();
-                return;
-            } catch (e) {
-                // NOP
-            }
-            info.valuePop();
-        }
-        throw new JsonSchemaValidationError('contains schema didn\'t match', value, schema, info);
-    }
-
-    _validateObject(value, schema, info) {
-        const properties = new Set(Object.getOwnPropertyNames(value));
-
-        const required = schema.required;
-        if (Array.isArray(required)) {
-            for (const property of required) {
-                if (!properties.has(property)) {
-                    throw new JsonSchemaValidationError(`Missing property ${property}`, value, schema, info);
-                }
-            }
-        }
-
-        const minProperties = schema.minProperties;
-        if (typeof minProperties === 'number' && properties.length < minProperties) {
-            throw new JsonSchemaValidationError('Not enough object properties', value, schema, info);
-        }
-
-        const maxProperties = schema.maxProperties;
-        if (typeof maxProperties === 'number' && properties.length > maxProperties) {
-            throw new JsonSchemaValidationError('Too many object properties', value, schema, info);
-        }
-
-        for (const property of properties) {
-            const schemaPath = [];
-            const propertySchema = this._getPropertySchema(schema, property, value, schemaPath);
-            if (propertySchema === null) {
-                throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema, info);
-            }
-
-            const propertyValue = value[property];
-
-            for (const [p, s] of schemaPath) { info.schemaPush(p, s); }
-            info.valuePush(property, propertyValue);
-            this._validate(propertyValue, propertySchema, info);
-            info.valuePop();
-            for (let i = 0; i < schemaPath.length; ++i) { info.schemaPop(); }
-        }
-    }
-
-    _isValueTypeAny(value, type, schemaTypes) {
-        if (typeof schemaTypes === 'string') {
-            return this._isValueType(value, type, schemaTypes);
-        } else if (Array.isArray(schemaTypes)) {
-            for (const schemaType of schemaTypes) {
-                if (this._isValueType(value, type, schemaType)) {
-                    return true;
-                }
-            }
-            return false;
-        }
-        return true;
-    }
-
-    _isValueType(value, type, schemaType) {
-        return (
-            type === schemaType ||
-            (schemaType === 'integer' && Math.floor(value) === value)
-        );
-    }
-
-    _getValueType(value) {
-        const type = typeof value;
-        if (type === 'object') {
-            if (value === null) { return 'null'; }
-            if (Array.isArray(value)) { return 'array'; }
-        }
-        return type;
-    }
-
-    _valuesAreEqualAny(value1, valueList) {
-        for (const value2 of valueList) {
-            if (this._valuesAreEqual(value1, value2)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    _valuesAreEqual(value1, value2) {
-        return value1 === value2;
-    }
-
-    _getDefaultTypeValue(type) {
-        if (typeof type === 'string') {
-            switch (type) {
-                case 'null':
-                    return null;
-                case 'boolean':
-                    return false;
-                case 'number':
-                case 'integer':
-                    return 0;
-                case 'string':
-                    return '';
-                case 'array':
-                    return [];
-                case 'object':
-                    return {};
-            }
-        }
-        return null;
-    }
-
-    _getDefaultSchemaValue(schema) {
-        const schemaType = schema.type;
-        const schemaDefault = schema.default;
-        return (
-            typeof schemaDefault !== 'undefined' &&
-            this._isValueTypeAny(schemaDefault, this._getValueType(schemaDefault), schemaType) ?
-            clone(schemaDefault) :
-            this._getDefaultTypeValue(schemaType)
-        );
-    }
-
-    _getValidValueOrDefault(schema, value, info) {
-        let type = this._getValueType(value);
-        if (typeof value === 'undefined' || !this._isValueTypeAny(value, type, schema.type)) {
-            value = this._getDefaultSchemaValue(schema);
-            type = this._getValueType(value);
-        }
-
-        switch (type) {
-            case 'object':
-                value = this._populateObjectDefaults(value, schema, info);
-                break;
-            case 'array':
-                value = this._populateArrayDefaults(value, schema, info);
-                break;
-            default:
-                if (!this.isValid(value, schema)) {
-                    const schemaDefault = this._getDefaultSchemaValue(schema);
-                    if (this.isValid(schemaDefault, schema)) {
-                        value = schemaDefault;
-                    }
-                }
-                break;
-        }
-
-        return value;
-    }
-
-    _populateObjectDefaults(value, schema, info) {
-        const properties = new Set(Object.getOwnPropertyNames(value));
-
-        const required = schema.required;
-        if (Array.isArray(required)) {
-            for (const property of required) {
-                properties.delete(property);
-
-                const propertySchema = this._getPropertySchema(schema, property, value, null);
-                if (propertySchema === null) { continue; }
-                info.valuePush(property, value);
-                info.schemaPush(property, propertySchema);
-                const hasValue = Object.prototype.hasOwnProperty.call(value, property);
-                value[property] = this._getValidValueOrDefault(propertySchema, hasValue ? value[property] : void 0, info);
-                info.schemaPop();
-                info.valuePop();
-            }
-        }
-
-        for (const property of properties) {
-            const propertySchema = this._getPropertySchema(schema, property, value, null);
-            if (propertySchema === null) {
-                Reflect.deleteProperty(value, property);
-            } else {
-                info.valuePush(property, value);
-                info.schemaPush(property, propertySchema);
-                value[property] = this._getValidValueOrDefault(propertySchema, value[property], info);
-                info.schemaPop();
-                info.valuePop();
-            }
-        }
-
-        return value;
-    }
-
-    _populateArrayDefaults(value, schema, info) {
-        for (let i = 0, ii = value.length; i < ii; ++i) {
-            const propertySchema = this._getPropertySchema(schema, i, value, null);
-            if (propertySchema === null) { continue; }
-            info.valuePush(i, value);
-            info.schemaPush(i, propertySchema);
-            value[i] = this._getValidValueOrDefault(propertySchema, value[i], info);
-            info.schemaPop();
-            info.valuePop();
-        }
-
-        const minItems = schema.minItems;
-        if (typeof minItems === 'number' && value.length < minItems) {
-            for (let i = value.length; i < minItems; ++i) {
-                const propertySchema = this._getPropertySchema(schema, i, value, null);
-                if (propertySchema === null) { break; }
-                info.valuePush(i, value);
-                info.schemaPush(i, propertySchema);
-                const item = this._getValidValueOrDefault(propertySchema, void 0, info);
-                info.schemaPop();
-                info.valuePop();
-                value.push(item);
-            }
-        }
-
-        const maxItems = schema.maxItems;
-        if (typeof maxItems === 'number' && value.length > maxItems) {
-            value.splice(maxItems, value.length - maxItems);
-        }
-
-        return value;
-    }
-
-    _isObject(value) {
-        return typeof value === 'object' && value !== null && !Array.isArray(value);
-    }
-
-    _getRegex(pattern, flags) {
-        const key = `${flags}:${pattern}`;
-        let regex = this._regexCache.get(key);
-        if (typeof regex === 'undefined') {
-            regex = new RegExp(pattern, flags);
-            this._regexCache.set(key, regex);
-        }
-        return regex;
-    }
-}
-
-Object.defineProperty(JsonSchemaValidator, 'unconstrainedSchema', {
-    value: Object.freeze({}),
-    configurable: false,
-    enumerable: true,
-    writable: false
-});
-
-class JsonSchemaTraversalInfo {
-    constructor(value, schema) {
-        this.valuePath = [];
-        this.schemaPath = [];
-        this.valuePush(null, value);
-        this.schemaPush(null, schema);
-    }
-
-    valuePush(path, value) {
-        this.valuePath.push([path, value]);
-    }
-
-    valuePop() {
-        this.valuePath.pop();
-    }
-
-    schemaPush(path, schema) {
-        this.schemaPath.push([path, schema]);
-    }
-
-    schemaPop() {
-        this.schemaPath.pop();
-    }
-}
-
-class JsonSchemaValidationError extends Error {
-    constructor(message, value, schema, info) {
-        super(message);
-        this.value = value;
-        this.schema = schema;
-        this.info = info;
-    }
-}