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import babel from '@rollup/plugin-babel'import {nodeResolve} from '@rollup/plugin-node-resolve'import replace from '@rollup/plugin-replace'import cleanup from 'rollup-plugin-cleanup'import {uglify} from 'rollup-plugin-uglify'
const extensions = ['.js']
export default {  plugins: [    replace({      preventAssignment: true,      'process.env.NODE_ENV': JSON.stringify('production'),    }),    nodeResolve({      extensions,      browser: true,      preferBuiltins: true,    }),    cleanup(),    babel({      babelHelpers: 'bundled',      extensions,      exclude: ['node_modules/**'],      presets: [['@babel/preset-env', {targets: {ie: '11'}}]],    }),    uglify({      compress: {        pure_getters: true,        unsafe: true,        unsafe_comps: true,      },      warnings: false,    }),  ],  input: 'rambda.js',  output: [    {      file: './dist/rambda.umd.js',      format: 'umd',      name: 'R',    },  ],}