mapbox-gl-arcgis-tiled-map-service/build/rollup_plugins.js

ArcGIS Tile Map Service custom source plugin for Mapbox GL

import flowRemoveTypes from '@mapbox/flow-remove-types';
import buble from 'rollup-plugin-buble';
import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import unassert from 'rollup-plugin-unassert';
import json from 'rollup-plugin-json';
import { terser } from 'rollup-plugin-terser';
import { createFilter } from 'rollup-pluginutils';

const {BUILD, MINIFY} = process.env;
const minified = MINIFY === 'true';
const production = BUILD === 'production';

// Common set of plugins/transformations shared across different rollup
// builds (main mapboxgl bundle, style-spec package, benchmarks bundle)

export const plugins = () => [
    flow(),
    json(),
    production ? unassert() : false,
    minified ? terser() : false,
    buble({transforms: {dangerousForOf: true}, objectAssign: "Object.assign"}),
    resolve({
        browser: true,
        preferBuiltins: false
    }),
    commonjs({
        // global keyword handling causes Webpack compatibility issues, so we disabled it:
        // https://github.com/mapbox/mapbox-gl-js/pull/6956
        ignoreGlobal: true
    })
].filter(Boolean);

// Using this instead of rollup-plugin-flow due to
// https://github.com/leebyron/rollup-plugin-flow/issues/5
export function flow() {
    return {
        name: 'flow-remove-types',
        transform: (code) => ({
            code: flowRemoveTypes(code).toString(),
            map: null
        })
    };
}