createPlugins

Author: aminya

src/main.ts

@@ -0,0 +1,107 @@
+import includesAny from "array-includes-any";
+
+// common plugins
+import resolve from "@rollup/plugin-node-resolve";
+import commonjs from "@rollup/plugin-commonjs";
+import { terser } from "rollup-plugin-terser";
+// @ts-ignore
+import autoExternal from "rollup-plugin-auto-external";
+
+export function createPlugins(
+  languages: Array<string> = ["ts", "js", "json", "coffee"],
+  babel: boolean = true,
+  extraPlugins?: Array<any>
+) {
+  let plugins = [
+    autoExternal({
+      builtins: true,
+      dependencies: false,
+      peerDependencies: false,
+    }),
+
+    // so Rollup can find externals
+    resolve({
+      extensions: [".ts", ".js", ".coffee", ".tsx", ".jsx", ".mjs"],
+      preferBuiltins: true,
+    }),
+
+    // so Rollup can convert externals to an ES module
+    commonjs(),
+  ];
+
+  // language specific
+  // typescript
+  if (includesAny(languages, ["ts", ".ts", "typescript", "TypeScript"])) {
+    const typescript = require("@rollup/plugin-typescript");
+    plugins.push(
+      typescript({
+        noEmitOnError: false,
+      })
+    );
+  }
+  // coffeescript
+  if (
+    includesAny(languages, [
+      "coffee",
+      ".coffee",
+      "coffeescript",
+      "coffee-script",
+      "CoffeeScript",
+    ])
+  ) {
+    const coffeescript = require("rollup-plugin-coffee-script");
+    plugins.push(coffeescript());
+  }
+  // json
+  if (includesAny(languages, ["json", ".json", "JSON"])) {
+    const json = require("@rollup/plugin-json");
+    plugins.push(json({ compact: true }));
+  }
+
+  // css only
+  if (includesAny(languages, ["css", ".css"])) {
+    console.log(`
+      css only was chosen to bundle css files into a single file.
+      This plugin requires you to import css files in a dummy js file and pass it as an input to rollup.
+      This should be done in a separate step from src code bundling
+    `);
+    const cssOnly = require("rollup-plugin-css-only");
+    plugins.push(cssOnly({ output: "dist/bundle.css" }));
+    // minify css
+    if (process.env.NODE_ENV === "production") {
+      const execute = require("rollup-plugin-execute");
+      plugins.push(execute(["csso dist/bundle.css --output dist/bundle.css"]));
+    }
+  }
+
+  // babel for js and coffee
+  if (babel || languages.includes("babel")) {
+    const { babel } = require("@rollup/plugin-babel");
+    plugins.push(
+      babel({
+        extensions: [".js", ".jsx", ".mjs", ".coffee"],
+        babelHelpers: "bundled",
+      })
+    );
+  }
+
+  // extra plugins
+  if (extraPlugins) {
+    plugins.push(...extraPlugins);
+  }
+
+  // minify only in production mode
+  if (process.env.NODE_ENV === "production") {
+    plugins.push(
+      terser({
+        ecma: 2018,
+        warnings: true,
+        compress: {
+          drop_console: false,
+        },
+      })
+    );
+  }
+
+  return plugins;
+}