@dword-design/dotenv-json-extended/dist/index.js

Custom dotenv wrapper with support for parent folders and schema validation.

import Ajv from 'ajv';
import { constantCase } from 'change-case';
import { findUpSync } from 'find-up';
import fs from 'fs-extra';
import mapObj from 'map-obj';
import parseValue from "./parse-value.js";
const ajv = new Ajv({
  useDefaults: true
});
const parse = ({
  cwd = '.'
} = {}) => {
  const schemaPath = findUpSync('.env.schema.json', {
    cwd
  });
  const filePath = findUpSync(process.env.NODE_ENV === 'test' ? '.test.env.json' : '.env.json', {
    cwd
  });
  const fromFile = filePath ? fs.readJsonSync(filePath) : {};
  const properties = schemaPath ? fs.readJsonSync(schemaPath) : {};
  const fromEnv = mapObj(properties, (name, property) => {
    const nodeEnvPrefix = process.env.NODE_ENV === 'test' ? 'TEST_' : '';
    const envVariableName = `${nodeEnvPrefix}${constantCase(name)}`;
    const valueString = process.env[envVariableName];
    let value;
    try {
      value = parseValue(valueString, property.type);
    } catch (error) {
      throw new Error(`Error at data.${name}: ${error.message}`);
    }
    return [name, value];
  });
  const fromAll = {
    ...fromEnv,
    ...fromFile
  };
  const schema = {
    additionalProperties: false,
    properties,
    required: Object.keys(properties),
    type: 'object'
  };
  const valid = ajv.validate(schema, fromAll);
  if (!valid) {
    throw new Error(`dotenv: ${ajv.errorsText()}`);
  }
  return mapObj(fromAll, (name, value) => [constantCase(name), typeof value === 'object' ? JSON.stringify(value) : value]);
};
export default {
  config: ({
    cwd = '.'
  } = {}) => Object.assign(process.env, parse({
    cwd
  })),
  parse
};