memserver/lib/utils.js

in-memory database/ORM and http mock server you can run in-browser and node environments. Built for large frontend teams, fast tests and rapid prototyping

import chalk from 'chalk';

export function generateUUID() {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
    const r = Math.random()*16|0, v = c === 'x' ? r : (r&0x3|0x8);

    return v.toString(16);
  });
}

export function primaryKeyTypeSafetyCheck(targetPrimaryKeyType, primaryKey, modelName) {
  const primaryKeyType = typeof primaryKey;

  if (targetPrimaryKeyType === 'id' && (primaryKeyType !== 'number')) {
    throw new Error(chalk.red(`[MemServer] ${modelName} model primaryKey type is 'id'. Instead you've tried to enter id: ${primaryKey} with ${primaryKeyType} type`));
  } else if (targetPrimaryKeyType === 'uuid' && (primaryKeyType !== 'string')) {
    throw new Error(chalk.red(`[MemServer] ${modelName} model primaryKey type is 'uuid'. Instead you've tried to enter uuid: ${primaryKey} with ${primaryKeyType} type`));
  }

  return targetPrimaryKeyType;
}