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const types = { |
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string: String, |
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array: Array, |
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object: Object, |
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number: Number, |
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boolean: Boolean, |
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url: URL, |
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date: Date, |
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function: Function, |
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}; |
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/** |
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* Object validator. |
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*/ |
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class Validator { |
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/** |
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* Set the schema for the validator. |
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* |
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* @param {object} schema |
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*/ |
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constructor(schema) { |
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this.schema = schema; |
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this.errors = []; |
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} |
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/** |
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* Validate the an array of items. |
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* |
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* @param {array} input |
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* |
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* @return {boolean} |
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*/ |
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validateAll(input) { |
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this.errors = []; |
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if (input.constructor !== Array || input.length < 1) { |
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return false; |
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} |
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return input.every((item) => this.validateItem(item)); |
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} |
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/** |
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* Validate the input. |
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* |
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* @param {object} input |
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* |
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* @return {boolean} |
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*/ |
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validate(input) { |
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this.errors = []; |
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return this.validateItem(input); |
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} |
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/** |
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* Validate an item. |
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* |
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* @param {object} item |
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* |
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* @return {boolean} |
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*/ |
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validateItem(item) { |
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this.errors = Object.entries(this.schema).filter( |
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([fieldNameRaw, fieldType]) => |
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!this.filterItems(fieldNameRaw, fieldType, item) |
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); |
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return Object.entries(this.schema).every(([fieldNameRaw, fieldType]) => |
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this.filterItems(fieldNameRaw, fieldType, item) |
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); |
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} |
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filterItems(fieldNameRaw, fieldType, item) { |
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if (!item) { |
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return false; |
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} |
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let fieldName = fieldNameRaw; |
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if (fieldNameRaw.substr(0, 1) === '?') { |
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fieldName = fieldNameRaw.substr(1); |
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if ( |
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!Object.prototype.hasOwnProperty.call(item, fieldName) || |
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item[fieldName] === null || |
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item[fieldName] === undefined |
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) { |
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return true; |
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} |
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} |
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const value = item[fieldName]; |
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if (value === null || value === undefined) { |
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return false; |
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} |
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if (typeof fieldType !== 'string' && value.constructor === fieldType) { |
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return true; |
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} |
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if (!types.hasOwnProperty(fieldType)) { |
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const validationMethod = `validate${value.constructor.name}`; |
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return this[validationMethod](value, fieldType); |
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} |
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const type = types[fieldType]; |
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return value.constructor === type; |
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} |
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/** |
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* Validate an array |
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* |
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* @param {mixed} value |
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* @param {string} fieldType |
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* |
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* @return {boolean} |
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*/ |
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validateArray(value, fieldType) { |
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return value.every((item) => this.validateObject(item, fieldType)); |
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} |
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/** |
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* Validate an object |
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* |
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* @param {mixed} value |
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* @param {string} fieldType |
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129
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* |
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130
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* @return {boolean} |
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131
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*/ |
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132
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validateObject(value, fieldType) { |
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const validator = new Validator(fieldType); |
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return validator.validate(value); |
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} |
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} |
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139
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module.exports = { |
|
140
|
|
|
Validator, |
|
141
|
|
|
types, |
|
142
|
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}; |
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143
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hckrnews /
validator
