compact-encoding - npm Package Compare versions

Comparing version 2.18.0 to 2.19.0

index.js

@@ -861,2 +861,33 @@ const b4a = require('b4a')
 
+const record = (exports.record = function (keyEncoding, valueEncoding) {
+  return {
+    preencode(state, v) {
+      const keys = Object.keys(v)
+      uint.preencode(state, keys.length)
+      for (const k of keys) {
+        keyEncoding.preencode(state, k)
+        valueEncoding.preencode(state, v[k])
+      }
+    },
+    encode(state, v) {
+      const keys = Object.keys(v)
+      uint.encode(state, keys.length)
+      for (const k of keys) {
+        keyEncoding.encode(state, k)
+        valueEncoding.encode(state, v[k])
+      }
+    },
+    decode(state) {
+      const out = Object.create(null)
+      const keys = uint.decode(state)
+      for (let i = 0; i < keys; i++) {
+        out[keyEncoding.decode(state)] = valueEncoding.decode(state)
+      }
+      return out
+    }
+  }
+})
+
+exports.stringRecord = record(utf8, utf8)
+
 function getType(o) {
@@ -863,0 +894,0 @@ if (o === null || o === undefined) return 0

package.json

 {
   "name": "compact-encoding",
-  "version": "2.18.0",
+  "version": "2.19.0",
   "description": "A series of compact encoding schemes for building small and fast parsers and serializers",
@@ -5,0 +5,0 @@ "main": "index.js",

test.js

@@ -1142,1 +1142,44 @@ const enc = require('./')
 })
+
+test('record', function (t) {
+  const encoding = enc.record(enc.string, enc.string)
+
+  t.alike(
+    enc.decode(encoding, enc.encode(encoding, { a: 'hello', b: 'world' })),
+    Object.assign(Object.create(null), {
+      a: 'hello',
+      b: 'world'
+    })
+  )
+})
+
+test('record - nested', function (t) {
+  const encoding = enc.record(enc.string, enc.record(enc.string, enc.string))
+
+  t.alike(
+    enc.decode(
+      encoding,
+      enc.encode(encoding, {
+        a: { b: 'record' },
+        c: { d: 'nested', e: 'test' }
+      })
+    ),
+    Object.assign(Object.create(null), {
+      a: Object.assign(Object.create(null), { b: 'record' }),
+      c: Object.assign(Object.create(null), { d: 'nested', e: 'test' })
+    })
+  )
+})
+
+test('stringRecord', function (t) {
+  t.alike(
+    enc.decode(
+      enc.stringRecord,
+      enc.encode(enc.stringRecord, { a: 'hello', b: 'world' })
+    ),
+    Object.assign(Object.create(null), {
+      a: 'hello',
+      b: 'world'
+    })
+  )
+})

No alert changes

Improved metrics

Total package byte prevSize

82714

2.22%

Lines of code

2143

3.23%

No dependency changes