Generate CommonJS files (#327)

Our npm package is now a CJS package :'(

We still include the ESM file in the npm package but we do not tell npm
about it. You can use it by importing "replicache/out/replicache.mjs"
for now.

.gitignore

@@ -1,8 +1,6 @@
 coverage
 node_modules
-out
-build
 .DS_Store
-repc
 src/wasm
-docs
+docs
+out

package.json

@@ -11,14 +11,13 @@
     "check-format": "prettier --check '{src,sample,perf}/**/*.{js,jsx,json,ts,tsx,html,css,md}' '*.{js,jsx,json,ts,tsx,html,css,md}'",
     "lint": "eslint --ext .ts,.tsx,.js,.jsx src/ perf/",
     "doc": "typedoc src/mod.ts",
-    "build": "rollup --config rollup.config.js",
-    "build-dev": "DEV=1 rollup --config rollup.config.js",
+    "build": "rollup --config rollup.config.js && CJS=1 rollup --config rollup.config.js ",
     "build:watch": "rollup --config rollup.config.js --watch",
-    "postinstall": "rm -f node_modules/fetch-mock/esm/client.d.ts && tool/get-deps.sh",
-    "prepublishOnly": "npm run lint && npm run get-repc && npm run test && rm -rf out && npm run build && npm run build-dev",
+    "postinstall": "rm -f node_modules/fetch-mock/esm/client.d.ts",
+    "prepublishOnly": "npm run lint && tool/get-deps.sh && npm run test && rm -rf out && npm run build",
     "prepack": "npm run prepublishOnly",
-    "perf": "node perf/runner.js",
-    "get-repc": "tool/get-deps.sh"
+    "prepare": "tool/get-deps.sh",
+    "perf": "node perf/runner.js"
   },
   "devDependencies": {
     "@esm-bundle/chai": "^4.3.0",
@@ -46,15 +45,12 @@
     "typedoc-plugin-sourcefile-url": "^1.0.6",
     "typescript": "^4.2.3"
   },
-  "type": "module",
-  "module": "out/replicache.js",
-  "types": "out/replicache.js",
+  "main": "out/replicache.js",
+  "types": "out/replicache.d.js",
   "files": [
-    "out",
-    "tool/get-deps.sh"
-  ],
-  "exports": {
-    ".": "./out/replicache.js",
-    "./dev": "./out/replicache.dev.js"
-  }
+    "out/replicache.js",
+    "out/replicache.mjs",
+    "out/replicache.wasm",
+    "out/replicache.dev.wasm"
+  ]
 }

perf/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

perf/perf.js

@@ -3,7 +3,7 @@
 
 /* eslint-env browser, es2020 */
 
-import {Replicache} from '../out/replicache.js';
+import {Replicache} from '../out/replicache.mjs';
 
 console.assert = console.debug = console.error = console.info = console.log = console.warn = () =>
   void 0;

rollup.config.js

@@ -1,47 +1,42 @@
 import typescript from '@wessberg/rollup-plugin-ts';
 import replace from '@rollup/plugin-replace';
-import alias from '@rollup/plugin-alias';
 import copy from 'rollup-plugin-copy';
 
 /* eslint-env node */
 
-const dev = !!process.env.DEV;
-const part = dev ? '.dev' : '';
-const variant = dev ? 'debug' : 'release';
+const dir = 'out';
+const cjs = process.env.CJS !== undefined;
+const format = cjs ? 'cjs' : 'es';
+const ext = cjs ? 'js' : 'mjs';
 
 export default {
   input: 'src/mod.ts',
   output: {
-    file: `out/replicache${part}.js`,
-    format: 'esm',
+    file: `./${dir}/replicache.${ext}`,
+    format,
   },
   plugins: [
-    // When building dev version use wasm/debug/ instead of wasm/relese/
-    alias({
-      entries: [
-        {
-          find: /wasm\/release\/replicache_client\.js$/,
-          replacement: `wasm/${variant}/replicache_client.js`,
-        },
-      ],
-    }),
-
-    // Use replicache.wasm in same directory as out/replicache.js
+    // Use replicache.wasm in same directory as replicache.js
     replace({
-      ['./wasm/release/replicache_client_bg.wasm']: `'./replicache${part}.wasm'`,
+      ['./wasm/release/replicache_client_bg.wasm']: `'./replicache.wasm'`,
       delimiters: [`'`, `'`],
       include: 'src/repm-invoker.ts',
     }),
 
     typescript(),
 
-    // Copy wasm file to out directory
+    // Copy wasm files to out directory
     copy({
       targets: [
         {
-          src: `src/wasm/${variant}/replicache_client_bg.wasm`,
-          dest: `out`,
-          rename: `replicache${part}.wasm`,
+          src: `src/wasm/release/replicache_client_bg.wasm`,
+          dest: `./${dir}/`,
+          rename: `replicache.wasm`,
+        },
+        {
+          src: `src/wasm/debug/replicache_client_bg.wasm`,
+          dest: `./${dir}/`,
+          rename: `replicache.dev.wasm`,
         },
       ],
     }),

src/replicache.test.ts

@@ -1483,7 +1483,7 @@ testWithBothStores('onSync', async () => {
     patch: [],
   });
   rep.pull();
-  await tickAFewTimes(10);
+  await tickAFewTimes(15);
 
   expect(onSync.callCount).to.eq(2);
   expect(onSync.getCall(0).args[0]).to.be.true;