New bundle strategy.

Author: mbostock

.npmignore

@@ -2,8 +2,8 @@
   "name": "@observablehq/stdlib",
   "version": "2.0.1",
   "license": "ISC",
-  "main": "dist/stdlib.umd.js",
-  "module": "dist/stdlib.js",
+  "main": "dist/stdlib.js",
+  "module": "src/index.js",
   "author": {
     "name": "Observable, Inc.",
     "url": "https://observablehq.com"
@@ -14,7 +14,7 @@
   },
   "scripts": {
     "test": "tape -r esm 'test/**/*-test.js'",
-    "prepare": "rollup -c",
+    "prepublishOnly": "rollup -c",
     "postpublish": "git push && git push --tags"
   },
   "husky": {
@@ -26,6 +26,10 @@
     "mode": "all",
     "cjs": true
   },
+  "files": [
+    "src/**.js",
+    "dist/**.js"
+  ],
   "dependencies": {
     "d3-require": "^1.2.0",
     "esm": "^3.0.84"

package.json

@@ -1,32 +1,24 @@
 import node from "rollup-plugin-node-resolve";
 import {terser} from "rollup-plugin-terser";
+import * as meta from "./package.json";
 
-const copyright = `// @observablehq/stdlib Copyright ${(new Date).getFullYear()} Observable, Inc.`;
+const copyright = `// @observablehq/stdlib v${meta.version} Copyright ${(new Date).getFullYear()} Observable, Inc.`;
 
-function config(output) {
-  return {
+export default [
+  {
     input: "src/index.js",
     plugins: [
       node(),
       terser({
-        toplevel: output.format === "es",
         output: {preamble: copyright},
         mangle: {reserved: ["RequireError"]}
       })
     ],
-    output
-  };
-}
-
-export default [
-  config({
-    format: "es",
-    file: "dist/stdlib.js"
-  }),
-  config({
-    format: "umd",
-    extend: true,
-    name: "observablehq",
-    file: "dist/stdlib.umd.js"
-  })
+    output: {
+      format: "umd",
+      extend: true,
+      name: "observablehq",
+      file: "dist/stdlib.js"
+    }
+  }
 ];