@hyperjump/json-pointer - npm Package Compare versions

Comparing version 0.5.1 to 0.6.0

lib/json-pointer.js

@@ -47,9 +47,9 @@ const curry = require("just-curry-it");
 
-const mutate = (pointer, subject = undefined, value = undefined) => {
+const assign = (pointer, subject = undefined, value = undefined) => {
   const ptr = compile(pointer);
-  const fn = curry((subject, value) => _mutate(ptr, subject, value, nil));
+  const fn = curry((subject, value) => _assign(ptr, subject, value, nil));
   return subject === undefined ? fn : fn(subject, value);
 };
 
-const _mutate = (pointer, subject, value, cursor) => {
+const _assign = (pointer, subject, value, cursor) => {
   if (pointer.length === 0) {
@@ -62,6 +62,51 @@ return;
     const segment = pointer.shift();
-    _mutate(pointer, applySegment(subject, segment, cursor), value, append(segment, cursor));
+    _assign(pointer, applySegment(subject, segment, cursor), value, append(segment, cursor));
   }
 };
 
+const unset = (pointer, subject = undefined) => {
+  const ptr = compile(pointer);
+  const fn = (subject) => _unset(ptr, subject, nil);
+  return subject === undefined ? fn : fn(subject);
+};
+
+const _unset = (pointer, subject, cursor) => {
+  if (pointer.length == 0) {
+    return undefined;
+  } else if (pointer.length > 1) {
+    const segment = pointer.shift();
+    const value = applySegment(subject, segment, cursor);
+    return { ...subject, [segment]: _unset(pointer, value, append(segment, cursor)) };
+  } else if (Array.isArray(subject)) {
+    return subject.filter((_, ndx) => ndx != pointer[0]);
+  } else if (typeof subject === "object" && subject !== null) {
+    const { [pointer[0]]: _, ...result } = subject;
+    return result;
+  } else {
+    return applySegment(subject, pointer[0], cursor);
+  }
+};
+
+const remove = (pointer, subject = undefined) => {
+  const ptr = compile(pointer);
+  const fn = (subject) => _remove(ptr, subject, nil);
+  return subject === undefined ? fn : fn(subject);
+};
+
+const _remove = (pointer, subject, cursor) => {
+  if (pointer.length === 0) {
+    return;
+  } else if (pointer.length > 1) {
+    const segment = pointer.shift();
+    const value = applySegment(subject, segment, cursor);
+    _remove(pointer, value, append(segment, cursor));
+  } else if (Array.isArray(subject)) {
+    subject.splice(pointer[0], 1);
+  } else if (typeof subject === "object" && subject !== null) {
+    delete subject[pointer[0]];
+  } else {
+    applySegment(subject, pointer[0], cursor);
+  }
+};
+
 const append = curry((segment, pointer) => pointer + "/" + escape(segment));
@@ -84,2 +129,2 @@
 
-module.exports = { nil, get, set, mutate, append };
+module.exports = { nil, append, get, set, assign, unset, delete: remove };

package.json

 {
   "name": "@hyperjump/json-pointer",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "description": "An RFC-6901 JSON Pointer implementation",
@@ -5,0 +5,0 @@ "main": "lib/json-pointer.js",

README.md

@@ -32,7 +32,7 @@ JSON Pointer
 
-// Get value from pointer
+// Get a value from a pointer
 const getFooBar = JsonPointer.get(fooBarPointer);
 getFooBar(value); // 42
 
-// Set value from pointer
+// Set a value from a pointer
 // New value is returned without modifying the original
@@ -42,6 +42,16 @@ const setFooBar = JsonPointer.set(fooBarPointer);
 
-// Mutate value from pointer
+// Assign a value from a pointer
 // The original value is changed and no value is returned
-const mutateFooBar = JsonPointer.mutate(fooBarPointer);
-mutateFooBar(value, 33); // { "foo": { "bar": 33 } }
+const assignFooBar = JsonPointer.assign(fooBarPointer);
+assignFooBar(value, 33); // { "foo": { "bar": 33 } }
+
+// Unset a value from a pointer
+// New value is returned without modifying the original
+const deleteFooBar = JsonPointer.unset(fooBarPointer);
+setFooBar(value); // { "foo": {} }
+
+// Delete a value from a pointer
+// New value is returned without modifying the original
+const deleteFooBar = JsonPointer.delete(fooBarPointer);
+setFooBar(value); // { "foo": {} }
 ```
@@ -48,0 +58,0 @@

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Improved metrics

Total package byte prevSize

7665

increased by33.12%

Lines of code

106

increased by63.08%

Number of lines in readme file

72

increased by16.13%

No dependency changes