memserver/packages/@memserver/model/dist/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 kleur from "kleur";
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(kleur.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(kleur.red(`[Memserver] ${modelName} model primaryKey type is 'uuid'. Instead you've tried to enter uuid: ${primaryKey} with ${primaryKeyType} type`));
  }

  return targetPrimaryKeyType;
}
export function insertFixturesWithTypechecks(modelDefinition, fixtures) {
  fixtures.reduce((primaryKeys, fixture) => {
    const modelName = modelDefinition.name;
    const primaryKey = (fixture.uuid ? "uuid" : null) || (fixture.id ? "id" : null);

    if (!primaryKey) {
      throw new Error(kleur.red(`[Memserver] DATABASE ERROR: At least one of your ${modelName} fixtures missing a primary key. Please make sure all your ${modelName} fixtures have either id or uuid primaryKey`));
    } else if (primaryKeys.includes(fixture[primaryKey])) {
      throw new Error(kleur.red(`[Memserver] DATABASE ERROR: Duplication in ${modelName} fixtures with ${primaryKey}: ${fixture[primaryKey]}`));
    }

    modelDefinition.insert(fixture);
    primaryKeys.push(fixture[primaryKey]);
    return primaryKeys;
  }, []);
  return fixtures;
}

function getModelPrimaryKey(model, existingPrimaryKeyType, modelName) {
  if (existingPrimaryKeyType) {
    return primaryKeyTypeSafetyCheck(existingPrimaryKeyType, model[existingPrimaryKeyType], modelName);
  }

  const primaryKey = model.id || model.uuid;

  if (!primaryKey) {
    return;
  }

  existingPrimaryKeyType = model.id ? "id" : "uuid";
  return primaryKeyTypeSafetyCheck(existingPrimaryKeyType, primaryKey, modelName);
}