breaking: drop support for ES, UMD formats

.github/workflows/ci.yml

@@ -6,19 +6,17 @@ on:
     branches: [master]
 
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-
       - uses: actions/cache@v2
         id: yarn-cache
         with:
           path: "**/node_modules"
           key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
-
-      - name: Install dependencies and build the library
+      
+      - name: Test TypeScript definitions
         run: |
           yarn
-          yarn build:lib
           yarn test:types

package.json

@@ -4,27 +4,24 @@
   "license": "Apache-2.0",
   "description": "Svelte implementation of the Carbon Design System",
   "svelte": "./src/index.js",
-  "main": "./lib/index.js",
-  "module": "./lib/index.mjs",
+  "main": "./src/index.js",
   "types": "./types/index.d.ts",
+  "type": "module",
   "sideEffects": [
     "css/*.css"
   ],
   "scripts": {
     "test:types": "svelte-check --workspace tests",
     "build:css": "node scripts/build-css",
     "build:docs": "node scripts/build-docs",
-    "build:lib": "rollup -c",
-    "prepack": "yarn build:docs & yarn build:lib",
+    "prepack": "yarn build:docs",
     "format": "prettier --write \"./**/*.{svelte,js,md}\"",
     "prepare": "husky install"
   },
   "dependencies": {
     "flatpickr": "4.6.9"
   },
   "devDependencies": {
-    "@rollup/plugin-commonjs": "^21.0.3",
-    "@rollup/plugin-node-resolve": "^13.3.0",
     "@tsconfig/svelte": "^3.0.0",
     "autoprefixer": "^10.4.8",
     "carbon-components": "10.56.0",
@@ -34,9 +31,6 @@
     "postcss": "^8.4.16",
     "prettier": "^2.7.1",
     "prettier-plugin-svelte": "^2.7.0",
-    "rollup": "^2.78.1",
-    "rollup-plugin-svelte": "^7.1.0",
-    "rollup-plugin-terser": "^7.0.2",
     "sass": "^1.49.11",
     "sveld": "^0.17.2",
     "svelte": "^3.46.6",
@@ -66,7 +60,6 @@
     "carbon design system"
   ],
   "files": [
-    "lib",
     "src",
     "types",
     "css"

scripts/build-css.js

@@ -1,35 +1,33 @@
-const fs = require("fs");
-const sass = require("sass");
-const autoprefixer = require("autoprefixer");
-const postcss = require("postcss");
-const path = require("path");
+import fs from "fs";
+import sass from "sass";
+import autoprefixer from "autoprefixer";
+import postcss from "postcss";
+import path from "path";
 
-(async () => {
-  const scss = fs
-    .readdirSync("css")
-    .filter((file) => file.endsWith(".scss") && !/^\_popover/.test(file))
-    .map((file) => path.parse(file));
+const scss = fs
+  .readdirSync("css")
+  .filter((file) => file.endsWith(".scss") && !/^\_popover/.test(file))
+  .map((file) => path.parse(file));
 
-  for (const { name, base } of scss) {
-    const file = `css/${base}`;
-    const outFile = `css/${name}.css`;
+for (const { name, base } of scss) {
+  const file = `css/${base}`;
+  const outFile = `css/${name}.css`;
 
-    console.log("[build-css]", file, "-->", outFile);
+  console.log("[build-css]", file, "-->", outFile);
 
-    const { css } = sass.renderSync({
-      file,
-      outFile,
-      outputStyle: "compressed",
-      omitSourceMapUrl: true,
-      includePaths: ["node_modules"],
-    });
+  const { css } = sass.renderSync({
+    file,
+    outFile,
+    outputStyle: "compressed",
+    omitSourceMapUrl: true,
+    includePaths: ["node_modules"],
+  });
 
-    const prefixed = await postcss([
-      autoprefixer({
-        overrideBrowserslist: ["last 1 version", "ie >= 11", "Firefox ESR"],
-      }),
-    ]).process(css, { from: undefined });
+  const prefixed = await postcss([
+    autoprefixer({
+      overrideBrowserslist: ["last 1 version", "ie >= 11", "Firefox ESR"],
+    }),
+  ]).process(css, { from: undefined });
 
-    fs.writeFileSync(outFile, prefixed.css);
-  }
-})();
+  fs.writeFileSync(outFile, prefixed.css);
+}

scripts/build-docs.js

@@ -1,7 +1,10 @@
-const fs = require("fs");
-const glob = require("glob");
-const { sveld } = require("sveld");
-const pkg = require("../package.json");
+import fs from "fs";
+import glob from "glob";
+import { sveld } from "sveld";
+
+const pkg = JSON.parse(
+  fs.readFileSync(new URL("../package.json", import.meta.url), "utf8")
+);
 
 sveld({
   glob: true,