Commit improvement to splitPath that helps with empty keys and accessing "/"

Author: TotalTechGeek

general.test.js

@@ -153,6 +153,18 @@ describe('Various Test Cases', () => {
     for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { var: 'hello\\.world' }, { 'hello.world': 2 }, 2)
   })
 
+  it('is able to access empty keys', async () => {
+    for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { var: '.' }, { '': 2 }, 2)
+  })
+
+  it('is able to access dot keys', async () => {
+    for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { var: '\\.' }, { '.': 2 }, 2)
+  })
+
+  it('is able to access "/" keys from above', async () => {
+    for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { map: [[1], { '+': [{ var: '' }, { var: '../../..\\/' }] }] }, { '': { '': { '/': 3 } } }, [4])
+  })
+
   it('is able to handle path escaping with multiple escapes', async () => {
     for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { var: '\\foo' }, { '\\foo': 2 }, 2)
     for (const engine of [...normalEngines, ...permissiveEngines]) await testEngine(engine, { var: '\\\\foo' }, { '\\foo': 2 }, 2)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "json-logic-engine",
-  "version": "3.0.4",
+  "version": "3.0.5",
   "description": "Construct complex rules with JSON & process them.",
   "main": "./dist/cjs/index.js",
   "module": "./dist/esm/index.js",

utilities/splitPath.js

@@ -35,25 +35,31 @@ export function splitPathMemoized (str) {
  * @param {string} separator
  * @returns {string[]}
  */
-export function splitPath (str, separator = '.', escape = '\\') {
+export function splitPath (str, separator = '.', escape = '\\', up = '/') {
   const parts = []
   let current = ''
 
   for (let i = 0; i < str.length; i++) {
     const char = str[i]
     if (char === escape) {
-      if (str[i + 1] === separator) {
-        current += separator
+      if (str[i + 1] === separator || str[i + 1] === up) {
+        current += str[i + 1]
         i++
       } else if (str[i + 1] === escape) {
         current += escape
         i++
+        // The following else might be something tweaked in a spec.
       } else current += escape
     } else if (char === separator) {
       parts.push(current)
       current = ''
     } else current += char
   }
-  parts.push(current)
+
+  // The if prevents me from pushing more sections than characters
+  // This is so that "." will [''] and not ['','']
+  // But .h will be ['','.h']
+  // .. becomes ['',''], ..h becomes ['', '', 'h']
+  if (parts.length !== str.length) parts.push(current)
   return parts
 }