Documentation: Usage with gulp

[simonschllng]

This is how we use json-schema-to-typescript in gulp. Maybe helpful for others, could be added to the docs/wiki.

gulp task:

let gulp = require('gulp');
let jsonType = require('../util/json-to-typings');

gulp.task('schema', () => {
  return gulp.src('schema/*.schema.json')
    .pipe(jsonType())
    .pipe(gulp.dest('models'));
});

file json-to-typings.js

let through = require('through2');
let PluginError = require('gulp-util').PluginError;
let jsonToType = require('json-schema-to-typescript');

module.exports = function() {
  return through.obj(function(file, encoding, callback) {
    if (file.isNull()) {
      return callback(null, file);
    }

    if (file.isStream()) {
      this.emit('error', new PluginError(PLUGIN_NAME, 'Streams not supported!'));
    }

    file.path = file.path.replace('schema.json', 'ts');
    file.contents = Buffer.from(jsonToType.compile(JSON.parse(file.contents.toString())));

    callback(null, file);
  });
};

[bcherny]

@simonschllng Please feel free to publish that code as a separate gulp-json-schema-to-typescript package. It is outside the scope of json-schema-to-typescript.