chore: switch to ESM (#87)

BREAKING CHANGE: deep imports/requires are no longer possible

Author: achingbrain

.aegir.js renamed to .aegir.cjs

@@ -4,7 +4,17 @@ const path = require('path')
 
 /** @type {import('aegir').Options["build"]["config"]} */
 const esbuild = {
-  inject: [path.join(__dirname, './scripts/node-globals.js')]
+  inject: [path.join(__dirname, './scripts/node-globals.js')],
+  plugins: [
+    {
+      name: 'node built ins',
+      setup (build) {
+        build.onResolve({ filter: /^immediate$/ }, () => {
+          return { path: path.join(__dirname, './scripts/immediate.js') }
+        })
+      }
+    }
+  ]
 }
 
 /** @type {import('aegir').PartialOptions} */
@@ -19,4 +29,4 @@ module.exports = {
       }
     }
   }
-}
+}

.github/workflows/main.yml

@@ -57,11 +57,13 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - run: npm install
-      - run: npx xvfb-maybe aegir test -t electron-main --bail
+      - run: npm run pretest
+      - run: npx xvfb-maybe aegir test -t electron-main --bail -f dist/cjs/node-test/*js
   test-electron-renderer:
     needs: check
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - run: npm install
-      - run: npx xvfb-maybe aegir test -t electron-renderer --bail
+      - run: npm run pretest
+      - run: npx xvfb-maybe aegir test -t electron-renderer --bail -f dist/cjs/browser-test/*js

.gitignore

@@ -40,4 +40,5 @@ dist
 test/test-repo/datastore
 init-default
 datastore-test
-.vscode
+.vscode
+types

README.md

@@ -1,4 +1,4 @@
-# js-datastore-level
+# js-datastore-level <!-- omit in toc -->
 
 [![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io)
 [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
@@ -14,21 +14,18 @@
 
 > Datastore implementation with [levelup](https://github.com/level/levelup) backend.
 
-## Lead Maintainer
+## Lead Maintainer <!-- omit in toc -->
 
 [Alex Potsides](https://github.com/achingbrain)
 
-## Table of Contents
+## Table of Contents <!-- omit in toc -->
 
-- [js-datastore-level](#js-datastore-level)
-  - [Lead Maintainer](#Lead-Maintainer)
-  - [Table of Contents](#Table-of-Contents)
-  - [Install](#Install)
-  - [Usage](#Usage)
-    - [Browser Shimming Leveldown](#Browser-Shimming-Leveldown)
-    - [Database names](#Database-names)
-  - [Contribute](#Contribute)
-  - [License](#License)
+- [Install](#install)
+- [Usage](#usage)
+  - [Browser Shimming Leveldown](#browser-shimming-leveldown)
+  - [Database names](#database-names)
+- [Contribute](#contribute)
+- [License](#license)
 
 ## Install
 
@@ -39,13 +36,13 @@ $ npm install datastore-level
 ## Usage
 
 ```js
-const LevelStore = require('datastore-level')
+import { LevelDatastore } from 'datastore-level'
 
 // Default using level as backend for node or the browser
-const store = new LevelStore('path/to/store')
+const store = new LevelDatastore('path/to/store')
 
 // another leveldown compliant backend like memdown
-const memStore = new LevelStore('my/mem/store', {
+const memStore = new LevelDatastore('my/mem/store', {
   db: require('level-mem')
 })
 ```
@@ -61,8 +58,8 @@ If you are using a bundler that does not support `pkg.browser`, you will need to
 `level-js@3` changed the database prefix from `IDBWrapper-` to `level-js-`, so please specify the old prefix if you wish to continue using databases created using `datastore-level` prior to `v0.12.0`.  E.g.
 
 ```javascript
-const leveljs = require('level-js')
-const browserStore = new LevelStore('my/db/name', {
+import leveljs from 'level-js'
+import browserStore = new LevelDatastore('my/db/name', {
   db: (path) => leveljs(path, {
     prefix: 'IDBWrapper-'
   })

package.json

@@ -4,23 +4,28 @@
   "description": "Datastore implementation with level(up|down) backend",
   "leadMaintainer": "Pedro Teixeira <[email protected]>",
   "main": "src/index.js",
-  "types": "dist/src/index.d.ts",
+  "type": "module",
+  "types": "types/index.d.ts",
   "files": [
-    "src",
-    "dist"
+    "*",
+    "!**/*.tsbuildinfo"
   ],
+  "exports": {
+    ".": {
+      "import": "./src/index.js"
+    }
+  },
   "scripts": {
-    "test": "aegir test",
-    "test:node": "aegir test -t node",
-    "test:browser": "aegir test -t browser",
-    "test:webworker": "aegir test -t webworker",
-    "prepare": "aegir build --no-bundle",
+    "clean": "rimraf dist types",
+    "prepare": "aegir build --no-bundle && cp -R types dist",
     "lint": "aegir ts -p check && aegir lint",
-    "release": "aegir release",
-    "release-minor": "aegir release --type minor",
-    "release-major": "aegir release --type major",
-    "coverage": "nyc -s npm run test:node && nyc report --reporter=html",
-    "dep-check": "aegir dep-check"
+    "build": "aegir build",
+    "release": "aegir release --target node",
+    "release-minor": "aegir release --type minor --target node",
+    "release-major": "aegir release --type major --target node",
+    "pretest": "aegir build --esm-tests",
+    "test": "aegir test",
+    "dep-check": "aegir dep-check -i rimraf"
   },
   "repository": {
     "type": "git",
@@ -42,26 +47,32 @@
   },
   "homepage": "https://github.com/ipfs/js-datastore-level#readme",
   "dependencies": {
-    "datastore-core": "^5.0.0",
-    "interface-datastore": "^5.1.1",
+    "datastore-core": "^6.0.5",
+    "interface-datastore": "^6.0.2",
     "it-filter": "^1.0.2",
     "it-map": "^1.0.5",
+    "it-sort": "^1.0.0",
     "it-take": "^1.0.1",
     "level": "^7.0.0"
   },
   "devDependencies": {
     "@ipld/dag-cbor": "^6.0.5",
-    "aegir": "^33.2.4",
+    "@types/rimraf": "^3.0.2",
+    "aegir": "^35.0.3",
     "assert": "^2.0.0",
     "buffer": "^6.0.3",
-    "interface-datastore-tests": "^1.0.0",
+    "interface-datastore-tests": "^2.0.3",
+    "ipfs-utils": "^8.1.6",
     "level-mem": "^5.0.1",
     "multiformats": "^9.2.0",
     "rimraf": "^3.0.0",
     "util": "^0.12.3"
   },
   "eslintConfig": {
-    "extends": "ipfs"
+    "extends": "ipfs",
+    "parserOptions": {
+      "sourceType": "module"
+    }
   },
   "contributors": [
     "achingbrain <[email protected]>",

scripts/immediate.js

@@ -0,0 +1 @@
+module.exports = setTimeout

scripts/node-globals.js

@@ -1,2 +1,3 @@
 // @ts-nocheck
-export const { Buffer } = require('buffer')
+export const { Buffer } = require('buffer')
+export const setImmediate = global.setImmediate

src/index.js

@@ -1,14 +1,11 @@
-'use strict'
-
-const {
-  Key, Errors, Adapter,
-  utils: {
-    sortAll
-  }
-} = require('interface-datastore')
-const filter = require('it-filter')
-const map = require('it-map')
-const take = require('it-take')
+import { Key } from 'interface-datastore'
+import { BaseDatastore, Errors } from 'datastore-core'
+import filter from 'it-filter'
+import map from 'it-map'
+import take from 'it-take'
+import sort from 'it-sort'
+// @ts-ignore no types
+import Level from 'level'
 
 /**
  * @typedef {import('interface-datastore').Datastore} Datastore
@@ -24,7 +21,7 @@ const take = require('it-take')
  *
  * @implements {Datastore}
  */
-class LevelDatastore extends Adapter {
+export class LevelDatastore extends BaseDatastore {
   /**
    * @param {any} path
    * @param {Object} [opts]
@@ -50,7 +47,7 @@ class LevelDatastore extends Adapter {
       delete opts.db
     } else {
       // @ts-ignore
-      this.database = require('level')
+      this.database = Level
     }
   }
 
@@ -183,7 +180,7 @@ class LevelDatastore extends Adapter {
     }
 
     if (Array.isArray(q.orders)) {
-      it = q.orders.reduce((it, f) => sortAll(it, f), it)
+      it = q.orders.reduce((it, f) => sort(it, f), it)
     }
 
     const { offset, limit } = q
@@ -213,7 +210,7 @@ class LevelDatastore extends Adapter {
     }
 
     if (Array.isArray(q.orders)) {
-      it = q.orders.reduce((it, f) => sortAll(it, f), it)
+      it = q.orders.reduce((it, f) => sort(it, f), it)
     }
 
     const { offset, limit } = q
@@ -293,5 +290,3 @@ function levelIteratorToIterator (li) {
     }
   }
 }
-
-module.exports = LevelDatastore

test/browser.js

@@ -1,17 +1,16 @@
 /* eslint-env mocha */
-'use strict'
 
-const { MountDatastore } = require('datastore-core')
-const { Key } = require('interface-datastore')
+import { MountDatastore } from 'datastore-core'
+import { Key } from 'interface-datastore/key'
 // @ts-ignore
-const leveljs = require('level')
-const LevelStore = require('../src')
+import leveljs from 'level'
+import { LevelDatastore } from '../src/index.js'
+import { interfaceDatastoreTests } from 'interface-datastore-tests'
 
 describe('LevelDatastore', () => {
   describe('interface-datastore (leveljs)', () => {
-    // @ts-ignore
-    require('interface-datastore-tests')({
-      setup: () => new LevelStore('hello', { db: leveljs }),
+    interfaceDatastoreTests({
+      setup: () => new LevelDatastore('hello', { db: leveljs }),
       teardown: () => new Promise((resolve, reject) => {
         // @ts-ignore
         leveljs.destroy('hello', err => {
@@ -23,18 +22,17 @@ describe('LevelDatastore', () => {
   })
 
   describe('interface-datastore (mount(leveljs, leveljs, leveljs))', () => {
-    // @ts-ignore
-    require('interface-datastore-tests')({
+    interfaceDatastoreTests({
       setup () {
         return new MountDatastore([{
           prefix: new Key('/a'),
-          datastore: new LevelStore('one', { db: leveljs })
+          datastore: new LevelDatastore('one', { db: leveljs })
         }, {
           prefix: new Key('/q'),
-          datastore: new LevelStore('two', { db: leveljs })
+          datastore: new LevelDatastore('two', { db: leveljs })
         }, {
           prefix: new Key('/z'),
-          datastore: new LevelStore('three', { db: leveljs })
+          datastore: new LevelDatastore('three', { db: leveljs })
         }])
       },
       teardown () {

test/fixtures/test-level-iterator-destroy.js

@@ -1,13 +1,14 @@
-'use strict'
-
-const { utils, Key } = require('interface-datastore')
-const LevelStore = require('../../src')
+import { Key } from 'interface-datastore/key'
+import { LevelDatastore } from '../../src/index.js'
+import tempdir from 'ipfs-utils/src/temp-dir.js'
+// @ts-ignore no types
+import Level from 'level'
 
 async function testLevelIteratorDestroy () {
   // @ts-ignore
-  const store = new LevelStore(utils.tmpdir(), { db: require('level') })
+  const store = new LevelDatastore(tempdir(), { db: Level })
   await store.open()
-  await store.put(new Key(`/test/key${Date.now()}`), Buffer.from(`TESTDATA${Date.now()}`))
+  await store.put(new Key(`/test/key${Date.now()}`), new TextEncoder().encode(`TESTDATA${Date.now()}`))
   for await (const d of store.query({})) {
     console.log(d) // eslint-disable-line no-console
   }