feat!: full type checks, generation and publishing

.github/workflows/mikeals-workflow.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}

index.js

@@ -1,15 +1,20 @@
 import * as cborg from 'cborg'
-import CID from 'multiformats/cid'
-import { codec } from 'multiformats/codecs/codec'
+import { CID } from 'multiformats/cid'
+
+/**
+ * @template {number} Code
+ * @template T
+ * @typedef {import('multiformats/codecs/interface').BlockCodec<Code, T>} BlockCodec
+ */
 
 // https://github.com/ipfs/go-ipfs/issues/3570#issuecomment-273931692
 const CID_CBOR_TAG = 42
-const code = 0x71
-const name = 'dag-cbor'
 
-// this will receive all Objects, we need to filter out anything that's not
-// a CID and return `null` for that so it's encoded as normal
 /**
+ * cidEncoder will receive all Objects during encode, it needs to filter out
+ * anything that's not a CID and return `null` for that so it's encoded as
+ * normal.
+ *
  * @param {any} obj
  * @returns {cborg.Token[]|null}
  */
@@ -32,13 +37,20 @@ function cidEncoder (obj) {
 }
 
 /**
+ * Intercept all `undefined` values from an object walk and reject the entire
+ * object if we find one.
+ *
  * @returns {null}
  */
 function undefinedEncoder () {
   throw new Error('`undefined` is not supported by the IPLD Data Model and cannot be encoded')
 }
 
 /**
+ * Intercept all `number` values from an object walk and reject the entire
+ * object if we find something that doesn't fit the IPLD data model (NaN &
+ * Infinity).
+ *
  * @param {number} num
  * @returns {null}
  */
@@ -61,15 +73,6 @@ const encodeOptions = {
   }
 }
 
-/**
- * @template T
- * @param {T} node
- * @returns {Uint8Array}
- */
-function encode (node) {
-  return cborg.encode(node, encodeOptions)
-}
-
 /**
  * @param {Uint8Array} bytes
  * @returns {CID}
@@ -97,11 +100,21 @@ decodeOptions.tags[CID_CBOR_TAG] = cidDecoder
 
 /**
  * @template T
- * @param {Uint8Array} data
- * @returns {T}
+ * @type {BlockCodec<0x71, T>}
  */
-function decode (data) {
-  return cborg.decode(data, decodeOptions)
+export const { name, code, decode, encode } = {
+  name: 'dag-cbor',
+  code: 0x71,
+  /**
+   * @template T
+   * @param {T} node
+   * @returns {Uint8Array}
+   */
+  encode: (node) => cborg.encode(node, encodeOptions),
+  /**
+   * @template T
+   * @param {Uint8Array} data
+   * @returns {T}
+   */
+  decode: (data) => cborg.decode(data, decodeOptions)
 }
-
-export default codec({ name, code, encode, decode })

package.json

@@ -1,52 +1,66 @@
 {
   "name": "@ipld/dag-cbor",
   "version": "0.0.0-dev",
-  "description": "JS implementation of dag-cbor",
+  "description": "JS implementation of DAG-CBOR",
+  "main": "index.js",
+  "types": "./types/index.d.ts",
   "type": "module",
-  "types": "index.d.ts",
   "scripts": {
-    "lint": "standard",
+    "lint": "standard *.js test/*.js",
     "build": "npm run build:js && npm run build:types",
-    "build:js": "npm_config_yes=true npx ipjs@latest build --tests",
-    "build:types": "tsc --build",
-    "check": "tsc --build --noEmit --noErrorTruncation",
-    "publish": "npm_config_yes=true npx ipjs@latest publish",
-    "test:cjs": "npm run build && mocha dist/cjs/node-test/test-*.js",
+    "build:js": "ipjs build --tests --main && npm run build:copy",
+    "build:copy": "cp -a tsconfig.json index.js dist/ && mkdir -p dist/test && cp test/*.js dist/test/",
+    "build:types": "npm run build:copy && cd dist && tsc --build",
+    "publish": "ipjs publish",
+    "test:cjs": "npm run build:js && mocha dist/cjs/node-test/test-*.js && npm run test:cjs:browser",
     "test:node": "hundreds mocha test/test-*.js",
-    "test:browser": "polendina --cleanup dist/cjs/node-test/test-*.js",
-    "test": "npm run lint && npm run test:node && npm run test:cjs && npm run test:browser",
-    "coverage": "c8 --reporter=html mocha test/test-*.js && npx st -d coverage -p 8080"
+    "test:cjs:browser": "polendina --page --worker --serviceworker --cleanup dist/cjs/node-test/test-*.js",
+    "test:ts": "npm run build:types && npm run test --prefix test/ts-use",
+    "test": "npm run lint && npm run test:node && npm run test:cjs && npm run test:ts",
+    "coverage": "c8 --reporter=html mocha test/test-*.js && npm_config_yes=true npx st -d coverage -p 8080"
   },
   "exports": {
     "import": "./index.js"
   },
+  "license": "(Apache-2.0 AND MIT)",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/ipld/js-dag-cbor.git"
   },
   "keywords": [
-    "IPFS"
+    "IPFS",
+    "IPLD"
   ],
-  "license": "MIT",
   "bugs": {
     "url": "https://github.com/ipld/js-dag-cbor/issues"
   },
   "homepage": "https://github.com/ipld/js-dag-cbor",
   "dependencies": {
-    "cborg": "^1.1.2",
-    "multiformats": "^4.6.1"
+    "cborg": "^1.2.1",
+    "multiformats": "^7.0.0"
   },
   "devDependencies": {
-    "chai": "^4.3.3",
+    "chai": "^4.3.4",
     "hundreds": "^0.0.9",
-    "ipld-garbage": "^2.0.0",
-    "mocha": "^8.3.1",
+    "ipjs": "^5.0.0",
+    "ipld-garbage": "^3.0.0",
+    "mocha": "^8.3.2",
     "polendina": "^1.1.0",
     "standard": "^16.0.3",
-    "typescript": "^4.2.3"
+    "typescript": "^4.2.4"
   },
   "directories": {
     "test": "test"
   },
+  "typesVersions": {
+    "*": {
+      "*": [
+        "types/*"
+      ],
+      "types/*": [
+        "types/*"
+      ]
+    }
+  },
   "author": "Mikeal Rogers <[email protected]> (https://www.mikealrogers.com/)"
 }

test/test-basics.js

@@ -1,8 +1,8 @@
 /* eslint-env mocha */
 'use strict'
-import garbage from 'ipld-garbage'
+import { garbage } from 'ipld-garbage'
 import chai from 'chai'
-import dagcbor from '../index.js'
+import * as dagcbor from '../index.js'
 import { bytes, CID } from 'multiformats'
 
 const { encode, decode } = dagcbor

test/ts-use/.gitignore

@@ -0,0 +1,3 @@
+node_modules
+src/main.js
+tsconfig.tsbuildinfo

test/ts-use/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "ts-use",
+  "private": true,
+  "dependencies": {
+    "@ipld/dag-cbor": "file:../../dist/",
+    "multiformats": "file:../../node_modules/multiformats"
+  },
+  "scripts": {
+    "test": "npm install && npx -p typescript tsc && node src/main.js"
+  }
+}

test/ts-use/src/main.ts

@@ -0,0 +1,45 @@
+import { deepStrictEqual } from 'assert'
+
+import { BlockEncoder, BlockDecoder, BlockCodec } from 'multiformats/codecs/interface'
+import * as dagCbor from '@ipld/dag-cbor'
+
+const main = () => {
+  // make sure we have a full CodecFeature
+  useCodecFeature(dagCbor)
+}
+
+function useCodecFeature (codec: BlockCodec<0x71, any>) {
+  // use only as a BlockEncoder
+  useEncoder(codec)
+
+  // use only as a BlockDecoder
+  useDecoder(codec)
+
+  // use as a full BlockCodec which does both BlockEncoder & BlockDecoder
+  useBlockCodec(codec)
+}
+
+function useEncoder<Codec extends number> (encoder: BlockEncoder<Codec, string>) {
+  deepStrictEqual(encoder.code, 0x71)
+  deepStrictEqual(encoder.name, 'dag-cbor')
+  deepStrictEqual(Array.from(encoder.encode('blip')), [100, 98, 108, 105, 112])
+  console.log('[TS] ✓ { encoder: BlockEncoder }')
+}
+
+function useDecoder<Codec extends number> (decoder: BlockDecoder<Codec, Uint8Array>) {
+  deepStrictEqual(decoder.code, 0x71)
+  deepStrictEqual(decoder.decode(Uint8Array.from([100, 98, 108, 105, 112])), 'blip')
+  console.log('[TS] ✓ { decoder: BlockDecoder }')
+}
+
+function useBlockCodec<Codec extends number> (blockCodec: BlockCodec<Codec, string>) {
+  deepStrictEqual(blockCodec.code, 0x71)
+  deepStrictEqual(blockCodec.name, 'dag-cbor')
+  deepStrictEqual(Array.from(blockCodec.encode('blip')), [100, 98, 108, 105, 112])
+  deepStrictEqual(blockCodec.decode(Uint8Array.from([100, 98, 108, 105, 112])), 'blip')
+  console.log('[TS] ✓ {}:BlockCodec')
+}
+
+main()
+
+export default main

test/ts-use/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "moduleResolution": "node",
+    "noImplicitAny": true,
+    "skipLibCheck": true,
+    "incremental": true
+  }
+}

tsconfig.json

@@ -1,66 +1,31 @@
 {
   "compilerOptions": {
-    /* Visit https://aka.ms/tsconfig.json to read more about this file */
-    /* Basic Options */
-    "incremental": true, /* Enable incremental compilation */
-    "target": "ES2020", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
-    "module": "ES2020", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
-    // "lib": [],                                   /* Specify library files to be included in the compilation. */
-    "allowJs": true, /* Allow javascript files to be compiled. */
-    "checkJs": true, /* Report errors in .js files. */
-    // "jsx": "preserve",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */
-    "declaration": true, /* Generates corresponding '.d.ts' file. */
-    "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
-    "emitDeclarationOnly": true,
-    // "sourceMap": true,                           /* Generates corresponding '.map' file. */
-    // "outFile": "./",                             /* Concatenate and emit output to single file. */
-    "outDir": "./dist", /* Redirect output structure to the directory. */
-    // "rootDir": "./",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
-    "composite": true, /* Enable project compilation */
-    // "tsBuildInfoFile": "./",                     /* Specify file to store incremental compilation information */
-    // "removeComments": true,                      /* Do not emit comments to output. */
-    // "noEmit": true,                              /* Do not emit outputs. */
-    // "importHelpers": true,                       /* Import emit helpers from 'tslib'. */
-    // "downlevelIteration": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
-    "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
-    /* Strict Type-Checking Options */
-    "strict": true, /* Enable all strict type-checking options. */
-    "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
-    "strictNullChecks": true, /* Enable strict null checks. */
-    "strictFunctionTypes": true, /* Enable strict checking of function types. */
-    "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
-    "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
-    "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
-    /* Additional Checks */
-    "noUnusedLocals": true, /* Report errors on unused locals. */
-    "noUnusedParameters": true, /* Report errors on unused parameters. */
-    "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
-    "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
-    "noUncheckedIndexedAccess": true, /* Include 'undefined' in index signature results */
-    "noPropertyAccessFromIndexSignature": true, /* Require undeclared properties from index signatures to use element accesses. */
-    /* Module Resolution Options */
-    "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
-    // "baseUrl": "./",                             /* Base directory to resolve non-absolute module names. */
-    // "paths": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
-    // "rootDirs": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */
-    // "typeRoots": [],                             /* List of folders to include type definitions from. */
-    // "types": [],                                 /* Type declaration files to be included in compilation. */
-    // "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
-    "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
-    // "preserveSymlinks": true,                    /* Do not resolve the real path of symlinks. */
-    // "allowUmdGlobalAccess": true,                /* Allow accessing UMD globals from modules. */
-    /* Source Map Options */
-    // "sourceRoot": "",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */
-    // "mapRoot": "",                               /* Specify the location where debugger should locate map files instead of generated locations. */
-    // "inlineSourceMap": true,                     /* Emit a single file with source maps instead of having a separate file. */
-    // "inlineSources": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
-    /* Experimental Options */
-    // "experimentalDecorators": true,              /* Enables experimental support for ES7 decorators. */
-    // "emitDecoratorMetadata": true,               /* Enables experimental support for emitting type metadata for decorators. */
-    /* Advanced Options */
-    "skipLibCheck": true, /* Skip type checking of declaration files. */
-    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
+    "allowJs": true,
+    "checkJs": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitReturns": false,
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "strictFunctionTypes": false,
+    "strictNullChecks": true,
+    "strictPropertyInitialization": true,
+    "strictBindCallApply": true,
+    "strict": true,
+    "alwaysStrict": true,
+    "esModuleInterop": true,
+    "target": "ES2018",
+    "moduleResolution": "node",
+    "declaration": true,
+    "declarationMap": true,
+    "outDir": "types",
+    "skipLibCheck": true,
+    "stripInternal": true,
+    "resolveJsonModule": true,
+    "baseUrl": ".",
+    "emitDeclarationOnly": true
   },
   "include": [
     "index.js"