safely access copy (#69)

* safely access copy

* Update package.json

* add node 20 to unit tests

* upgrade github actions

.github/workflows/cd-workflow.yml

@@ -10,11 +10,11 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: npm install
         run: npm install
       - name: Upload built artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: artifacts
           path: src/
@@ -25,14 +25,14 @@ jobs:
     name: publish to github packages
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download built artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: artifacts
           path: src
       - name: Setup Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           registry-url: 'https://npm.pkg.github.com'
@@ -47,14 +47,14 @@ jobs:
     name: publish to npm
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download built artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: artifacts
           path: src
       - name: Setup Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           registry-url: 'https://registry.npmjs.org'

.github/workflows/ci-workflow.yml

@@ -8,12 +8,12 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        node-version: ['16', '18']
+        node-version: ['16', '18', '20']
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - name: Install dependencies

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@amaabca/sensitive-param-filter",
-  "version": "1.2.8",
+  "version": "1.2.9",
   "description": "A package for filtering sensitive data (parameters, keys) from a variety of JS objects",
   "main": "src/index.js",
   "author": "Alberta Motor Association",

src/sensitiveParamFilter.js

@@ -39,8 +39,9 @@ class SensitiveParamFilter {
       return input
     }
     const id = input[circularReferenceKey]
-    if (id || id === 0) {
-      return this.examinedObjects[id].copy
+    const copy = this.examinedObjects && this.examinedObjects[id] && this.examinedObjects[id].copy
+    if (copy) {
+      return copy
     }
 
     if (typeof input === 'string' || input instanceof String) {