@nozbe/watermelondb/src/decorators/common.js

Build powerful React Native and React web apps that scale from hundreds to tens of thousands of records and remain fast

// @flow

import invariant from '../utils/common/invariant'

import type { ColumnName } from '../Schema'

// eslint-disable-next-line
export function ensureDecoratorUsedProperly(
  columnName: ColumnName,
  target: Object,
  key: string,
  descriptor: Object,
): void {
  invariant(
    columnName,
    `Pass column name (raw field name) to the decorator - error in ${target.constructor.name}.prototype.${key} given.`,
  )
  if (descriptor) {
    invariant(
      'initializer' in descriptor,
      `Model field decorators can only be used for simple properties - method, setter or getter ${target.constructor.name}.prototype.${key} given.`,
    )
    invariant(
      typeof descriptor.initializer !== 'function',
      `Model field decorators must not be used on properties with a default value - error in "${target.constructor.name}.prototype.${key}".`,
    )
  }
}