modelz.min.js.map

{"version":3,"file":"modelz.min.js","sources":["src/util.js","src/index.js"],"sourcesContent":["'use strict'\n\nexport function noop() {}\n\nexport function identity(thing) {\n  return thing\n}\n\nexport function type(obj) {\n  return {}.toString.call(obj)\n}\n\nexport function isObject(thing) {\n  return thing !== null && type(thing) === '[object Object]'\n}\n\nexport function isArray(thing) {\n  return type(thing) == '[object Array]'\n}\n\nexport function isFunction(thing) {\n  return typeof thing === 'function'\n}\n\nexport function isString(thing) {\n  return typeof thing === 'string'\n}\n\nexport function isNumber(thing) {\n  return typeof thing === 'number'\n}\n\nexport function isUndefined(thing) {\n  return typeof thing === 'undefined'\n}\n","'use strict'\n\nimport {\n  identity,\n  isArray,\n  isFunction,\n  isNumber,\n  isObject,\n  isString,\n  noop,\n} from './util.js'\n\nconst defaultFieldConfig = {\n  construct: identity,\n  getCacheKey: noop,\n  enumerable: true,\n  required: false,\n}\n\nconst defaultGlobalConfig = {\n  castString: true,\n  parseNumbers: true,\n  onChangeListener: () => noop,\n  extraProperties: false,\n  embedPlainData: true,\n  preInit: identity,\n  postInit: identity,\n  types: {},\n}\n\nfunction createCacheFunction({ cacheKey }) {\n  if (isArray(cacheKey)) {\n    return (obj) =>\n      cacheKey\n        .map((prop) =>\n          obj[prop] instanceof Date ? obj[prop].getTime() : obj[prop]\n        )\n        .join('|<3|')\n  }\n  if (isFunction(cacheKey)) {\n    return cacheKey\n  }\n  return noop\n}\n\nfunction modelz(globalConfig) {\n  const {\n    castString,\n    debug,\n    embedPlainData,\n    extraProperties,\n    onChangeListener,\n    parseNumbers,\n    postInit,\n    preInit,\n    types,\n  } = {\n    ...defaultGlobalConfig,\n    ...globalConfig,\n  }\n  function getConstructor(item, fieldName) {\n    const constructors = {\n      string(value) {\n        if (isString(value)) {\n          return value\n        }\n        if (castString) {\n          return '' + value\n        }\n        throw Error(`Expect a string for \"${fieldName}\", got \"${value}\"`)\n      },\n      number(value) {\n        if (isNumber(value)) {\n          return value\n        }\n        if (isString(value) && parseNumbers) {\n          return parseFloat(value)\n        }\n        throw Error(`Expect a number for \"${fieldName}\", got \"${value}\"`)\n      },\n      boolean(value) {\n        return !!value\n      },\n      array(value) {\n        return [...value]\n      },\n      object(value) {\n        return { ...value }\n      },\n      date(value) {\n        return new Date(value)\n      },\n      identity,\n      ...types,\n    }\n\n    if (isFunction(item)) {\n      return item\n    }\n    if (constructors[item] == null) {\n      throw Error(\n        `Try to use unknown type \"${item}\" as type for \"${fieldName}\"`\n      )\n    }\n    return constructors[item]\n  }\n  function parseConfig(fieldConfig, fieldName) 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[type, required, defaultValue] = fieldConfig\n      return {\n        construct: getConstructor(type, fieldName),\n        required,\n        default: defaultValue,\n      }\n    }\n\n    if (isFunction(fieldConfig)) {\n      // plain construct\n      return {\n        construct: fieldConfig,\n      }\n    }\n\n    if (isString(fieldConfig)) {\n      try {\n        // init by type\n        return {\n          construct: getConstructor(fieldConfig, fieldName),\n        }\n      } catch (e) {\n        // fail silently and try next init\n      }\n    }\n\n    try {\n      // init by default\n      return {\n        construct: getConstructor(typeof fieldConfig, fieldName),\n        required: true,\n        default: fieldConfig,\n      }\n    } catch (e) {\n      throw new Error(\n        `No proper config handler found for config:\\n${JSON.stringify(\n          fieldConfig\n        )}`\n      )\n    }\n  }\n\n  return function Schema(fields, config) {\n    config = {\n      embedPlainData,\n      extraProperties,\n      preInit,\n      postInit,\n      onChangeListener,\n      ...config,\n    }\n    const modelName = config.name ? config.name : 'instance'\n    const thisSchema = { modelName }\n    return function construct(sourceData = {}) {\n      debug &&\n        debug.extend('create')(\n          `constructing ${modelName} with data %O`,\n          sourceData\n        )\n      if (sourceData._schema === thisSchema) {\n        return sourceData\n      }\n      const _data = {}\n      let onChange = noop\n\n      let result = {}\n      if (config.extraProperties) {\n        result = { ...sourceData }\n      } else if (debug) {\n        const fieldKeys = Object.keys(fields)\n        const ignoredProperties = Object.keys(sourceData).filter(\n          (key) => !fieldKeys.includes(key)\n        )\n        if (ignoredProperties.length) {\n          debug.extend('warn')(\n            `The properties %o are not defined on target ${modelName} and will therefore be dropped.`,\n            ignoredProperties\n          )\n        }\n      }\n\n      if (config.embedPlainData) {\n        Object.defineProperty(result, '_data', {\n          get: () => _data,\n          enumerable: false,\n        })\n      }\n      Object.defineProperty(result, '_isInitialized', {\n        get: () => true,\n        enumerable: false,\n      })\n      Object.defineProperty(result, '_schema', {\n        get: () => thisSchema,\n        enumerable: false,\n      })\n      result = config.preInit(result)\n      onChange = config.onChangeListener(result)\n      for (const fieldName in fields) {\n        const fieldConfig = {\n          ...defaultFieldConfig,\n          ...parseConfig(fields[fieldName], fieldName),\n        }\n        Object.defineProperty(result, fieldName, {\n          enumerable: fieldConfig.enumerable,\n          get: function () {\n            if (fieldConfig.get) {\n              const key = fieldConfig.getCacheKey(result)\n              if (\n                !_data.hasOwnProperty(fieldName) ||\n                key == null ||\n                key !== _data[fieldName].key\n              ) {\n                _data[fieldName] = { key, value: fieldConfig.get(result) }\n              }\n              return _data[fieldName].value\n            }\n            return result._data[fieldName]\n          },\n          set: function (value) {\n            const oldValue = result[fieldName]\n            if (isFunction(fieldConfig.set)) {\n              fieldConfig.set(result, value)\n            } else if (!fieldConfig.required && value == null) {\n              _data[fieldName] = value = null\n            } else {\n              _data[fieldName] = fieldConfig.construct(\n                value,\n                result,\n                fieldConfig\n              )\n            }\n            onChange(fieldName, value, oldValue)\n          },\n        })\n\n        if (sourceData[fieldName] != null) {\n          result[fieldName] = sourceData[fieldName]\n        } else if (fieldConfig.hasOwnProperty('default')) {\n          if (isFunction(fieldConfig.default)) {\n            result[fieldName] = fieldConfig.default(sourceData)\n          } else {\n            result[fieldName] = fieldConfig.default\n          }\n        } else if (fieldConfig.required) {\n          throw Error('No value set for ' + fieldName)\n        } else if (!fieldConfig.get) {\n          // default to null if it's not a computed prop\n          result[fieldName] = null\n        }\n      }\n      result = config.postInit(result)\n      if (!extraProperties) {\n        Object.seal(result)\n      }\n      return result\n    }\n  }\n}\n\nexport default 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