generate-typings-mui-icons.js

/**
 * Generate type definitions for `material-ui-icons`.
 * The generated contens will be written to
 * `src/typings/material-ui-icons.d.ts`.
 */
const { parse, resolve } = require('path');
const { EOL } = require('os');
const chalk = require('chalk');
const { writeFile } = require('fs-extra');
const globby = require('globby');
const { map, pipe } = require('ramda');
const { error } = require('./utils');
const log = console.log;

const MODULE_DIR = resolve(__dirname, '../node_modules/material-ui-icons');
const DTS_FILE = resolve(__dirname, '../src/typings/material-ui-icons.d.ts');

// Helpers
// ---------------
const normalizeFileName = name => parse(name).name;

const createTypeDefinition = name =>
  `declare module 'material-ui-icons/${name}' {
  import SvgIcon from 'material-ui/SvgIcon';
  export default class ${name} extends SvgIcon {}
}`;

const convertFilesToTypings = map(
  pipe(normalizeFileName, createTypeDefinition)
);

log(`\u{1f52c}  Searching for modules inside "${chalk.dim(MODULE_DIR)}".`);
globby(['*.js', '!index*'], { cwd: MODULE_DIR })
  .then(convertFilesToTypings)
  .then(typings => typings.join(`${EOL}${EOL}`))
  .then(contents => writeFile(DTS_FILE, contents, { encoding: 'utf8' }))
  .then(() => log(`\u{1F5C4}  Written typings to ${chalk.dim(DTS_FILE)}.`))
  .catch(err => {
    if (err) {
      error(err);
    }
    process.exit(1);
  });