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rollup.config.js
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rollup.config.js
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import pkg from "./package.json";
import typescript from "@rollup/plugin-typescript";
import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import { terser } from "rollup-plugin-terser";
import svelte from "rollup-plugin-svelte";
import html from "@rollup/plugin-html";
import cleaner from "rollup-plugin-cleaner";
import { preserveShebangs } from "rollup-plugin-preserve-shebangs";
import replace from "@rollup/plugin-replace";
const production = !process.env.ROLLUP_WATCH;
export default [
// UMD
{
input: "src/index.ts",
output: {
name: "evalNumExpr",
file: pkg.browser,
format: "umd",
},
plugins: [typescript({ sourceMap: false })],
},
// CommonJS (for Node) and ES module (for bundlers) build.
{
input: "src/index.ts",
output: [
{ file: pkg.main, format: "cjs", exports: "auto" },
{ file: pkg.module, format: "es" },
],
plugins: [typescript({ sourceMap: false })],
},
// CLI CommonJS (for Node)
{
input: "cli/index.ts",
output: {
name: "evalNumExpr",
file: pkg.bin["evalNumExpr"],
format: "cjs",
},
plugins: [preserveShebangs(), typescript({ sourceMap: false })],
},
// docs
{
input: "docs/main.js",
output: {
file: ".out/main.js",
format: "iife", // immediately-invoked function expression — suitable for <script> tags
sourcemap: true,
},
plugins: [
cleaner({
targets: [".out"],
}),
resolve(), // tells Rollup how to find date-fns in node_modules
commonjs(), // converts date-fns to ES modules
svelte({
emitCss: false,
}), // handle svelte
typescript({ sourceMap: true }),
production && terser(), // minify, but only in production
replace({
APP_VERSION: process.env.npm_package_version,
preventAssignment: true,
}),
html({
filename: "index.html",
title: "Evaluate Numeric Expressions",
template: function ({ files, attributes, title, meta, publicPath }) {
const scripts = (files.js || [])
.map(({ fileName }) => {
const attrs = makeHtmlAttributes(attributes.script);
return `<script src="${publicPath}${fileName}"${attrs}></script>`;
})
.join("\n");
const links = (files.css || [])
.map(({ fileName }) => {
const attrs = makeHtmlAttributes(attributes.link);
return `<link href="${publicPath}${fileName}" rel="stylesheet"${attrs}>`;
})
.join("\n");
const metas = meta
.map((input) => {
const attrs = makeHtmlAttributes(input);
return `<meta${attrs}>`;
})
.join("\n");
return `<!DOCTYPE html>
<html ${attributes}>
<head>
${metas}
<title>${title}</title>
${links}
<style>
@import url("https://fonts.googleapis.com/css?family=Lato:400");
html {
font-size: 16px;
height: 100%;
}
@media all and (max-width: 959px) and (min-width: 600px) {
html {
font-size: 15px;
}
}
@media all and (max-width: 599px) and (min-width: 320px) {
html {
font-size: 13px;
}
}
html,
body {
height: 100%;
min-height: 100%;
}
* {
box-sizing: border-box;
}
body {
font-family: "Lato", sans-serif;
line-height: 1.6;
font-weight: 400;
margin: 0;
min-height: 100%;
background: white;
margin: 0;
}
</style>
</head>
<body>
<div id="root" />
${scripts}
</body>
</html>`;
},
}),
],
},
];
export const makeHtmlAttributes = (attributes) => {
if (!attributes) {
return "";
}
const keys = Object.keys(attributes);
// eslint-disable-next-line no-param-reassign
return keys.reduce(
(result, key) => (result += ` ${key}="${attributes[key]}"`),
""
);
};