serverless-offline-python/src/utils.js

Emulate AWS λ and API Gateway locally when developing your Serverless project

'use strict';

const _ = require('lodash');

module.exports = {
  toPlainOrEmptyObject: obj => _.isPlainObject(obj) ? obj : {},
  random: (lower, upper, floating) => _.random(lower, upper, floating),
  nullIfEmpty: o => o && (Object.keys(o).length > 0 ? o : null),
  capitalizeKeys: o => {
    const capitalized = {};
    for (let key in o) { // eslint-disable-line prefer-const
      capitalized[key.replace(/((?:^|-)[a-z])/g, x => x.toUpperCase())] = o[key];
    }

    return capitalized;
  },
  // Detect the toString encoding from the request headers content-type
  // enhance if further content types need to be non utf8 encoded.
  detectEncoding: request => _.includes(request.headers['content-type'], 'multipart/form-data') ? 'binary' : 'utf8',
  isProxyRuntime: runtime => { return runtime.startsWith('python') || runtime.startsWith('ruby') },
  supportedRuntimes: [
    'nodejs8.10',
    'nodejs10.x',
    'nodejs12.x',
    'babel',
    'python2.7',
    'python3.6',
    'python3.7',
    'python3.8',
    'ruby2.5',
  ],
};