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rollup.config.js
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rollup.config.js
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import commonjs from '@rollup/plugin-commonjs';
import json from '@rollup/plugin-json';
import resolve from '@rollup/plugin-node-resolve';
import ts from '@wessberg/rollup-plugin-ts';
import bundleSize from 'rollup-plugin-bundle-size';
import {terser} from 'rollup-plugin-terser';
const pkg = require('./package.json');
const plugins = (browserslist, declaration) => [
resolve(),
commonjs(),
json(),
ts({
tsconfig: (resolvedConfig) => ({
...resolvedConfig,
declaration,
declarationMap: declaration,
}),
transpiler: "babel",
babelConfig: {"presets": ["@babel/preset-env"]},
browserslist,
}),
bundleSize(),
];
const outputs = [
{
input: 'src/embed.ts',
output: {
file: 'build/vega-embed.module.js',
format: 'esm',
sourcemap: true,
},
plugins: plugins(undefined, true),
external: [...Object.keys(pkg.dependencies), ...Object.keys(pkg.peerDependencies)],
},
];
for (const build of ['es5', 'es6']) {
const buildFolder = build === 'es5' ? 'build-es5' : 'build';
outputs.push({
input: 'src/index.ts',
output: [
{
file: `${buildFolder}/vega-embed.js`,
format: 'umd',
sourcemap: true,
name: 'vegaEmbed',
globals: {
vega: 'vega',
'vega-lite': 'vegaLite',
},
},
{
file: `${buildFolder}/vega-embed.min.js`,
format: 'umd', // cannot do iife because rollup generates code that expects Vega-Lite to be present
sourcemap: true,
name: 'vegaEmbed',
globals: {
vega: 'vega',
'vega-lite': 'vegaLite',
},
plugins: [terser()],
},
],
plugins: plugins(build === 'es5' ? 'defaults' : 'defaults and not IE 11', false),
external: ['vega', 'vega-lite'],
});
}
export default outputs;