diff --git a/.gitignore b/.gitignore
index 8697d979f..c1854e809 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,8 @@ jsconfig.json
 
 # LWC Jest coverage reports
 coverage/
+.vim-force.com
+.vscode
 
 # Logs
 logs
diff --git a/delta/.forceignore b/delta/.forceignore
new file mode 100644
index 000000000..ee15bba76
--- /dev/null
+++ b/delta/.forceignore
@@ -0,0 +1,21 @@
+# List files or directories below to ignore them when running force:source:push, force:source:pull, and force:source:status
+# More information: https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_exclude_source.htm
+#
+
+# Standard metadata
+package.xml
+**appMenu
+**appSwitcher
+**objectTranslations
+**profiles
+**settings
+
+# LWC configuration files
+**/jsconfig.json
+**/.eslintrc.json
+
+# LWC Jest
+**/__tests__/**
+
+# For the pubsub README
+**/pubsub/**
\ No newline at end of file
diff --git a/delta/diff.json b/delta/diff.json
new file mode 100644
index 000000000..3253300c5
--- /dev/null
+++ b/delta/diff.json
@@ -0,0 +1,63 @@
+[
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_AFTERDELETE",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_AFTERINSERT",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_AFTERUNDELETE",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_AFTERUPDATE",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_BEFOREDELETE",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_BEFOREINSERT",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_BEFOREUPDATE",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_NEWLIST",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "CustomLabel",
+        "componentName": "TRIGGER_OLDLIST",
+        "path": "delta\\force-app\\main\\default\\labels\\CustomLabels.labels-meta.xml"
+    },
+    {
+        "action": "Deploy",
+        "metadataType": "ApexClass",
+        "componentName": "CalculatorService",
+        "message": "",
+        "path": "delta\\force-app\\main\\default\\classes\\CalculatorService.cls-meta.xml"
+    }
+]
\ No newline at end of file
diff --git a/delta/force-app/main/default/classes/CalculatorService.cls b/delta/force-app/main/default/classes/CalculatorService.cls
new file mode 100644
index 000000000..5ebf0f12b
--- /dev/null
+++ b/delta/force-app/main/default/classes/CalculatorService.cls
@@ -0,0 +1,8 @@
+public with sharing class CalculatorService {
+    public static Integer add(Integer a, integer b) {
+        return a+b;
+    }
+    public static Integer sub(Integer a, integer b) {
+        return a-b;
+    }
+}
diff --git a/delta/force-app/main/default/classes/CalculatorService.cls-meta.xml b/delta/force-app/main/default/classes/CalculatorService.cls-meta.xml
new file mode 100644
index 000000000..541584ff3
--- /dev/null
+++ b/delta/force-app/main/default/classes/CalculatorService.cls-meta.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>50.0</apiVersion>
+    <status>Active</status>
+</ApexClass>
diff --git a/delta/force-app/main/default/labels/CustomLabels.labels-meta.xml b/delta/force-app/main/default/labels/CustomLabels.labels-meta.xml
new file mode 100644
index 000000000..79ea2fa38
--- /dev/null
+++ b/delta/force-app/main/default/labels/CustomLabels.labels-meta.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CustomLabels xmlns="http://soap.sforce.com/2006/04/metadata">
+  <labels>
+    <fullName>TRIGGER_AFTERDELETE</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_AFTERDELETE</shortDescription>
+    <value>TRIGGER_AFTERDELETE</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_AFTERINSERT</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_AFTERINSERT</shortDescription>
+    <value>TRIGGER_AFTERINSERT</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_AFTERUNDELETE</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_AFTERUNDELETE</shortDescription>
+    <value>TRIGGER_AFTERUNDELETE</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_AFTERUPDATE</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_AFTERUPDATE</shortDescription>
+    <value>TRIGGER_AFTERUPDATE</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_BEFOREDELETE</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_BEFOREDELETE</shortDescription>
+    <value>TRIGGER_BEFOREDELETE</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_BEFOREINSERT</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_BEFOREINSERT</shortDescription>
+    <value>TRIGGER_BEFOREINSERT</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_BEFOREUPDATE</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_BEFOREUPDATE</shortDescription>
+    <value>TRIGGER_BEFOREUPDATE</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_NEWLIST</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_NEWLIST</shortDescription>
+    <value>newList</value>
+  </labels>
+  <labels>
+    <fullName>TRIGGER_OLDLIST</fullName>
+    <categories>Trigger framework</categories>
+    <language>en_US</language>
+    <protected>false</protected>
+    <shortDescription>TRIGGER_OLDLIST</shortDescription>
+    <value>oldList</value>
+  </labels>
+</CustomLabels>
\ No newline at end of file
diff --git a/delta/sfdx-project.json b/delta/sfdx-project.json
new file mode 100644
index 000000000..7a8945faa
--- /dev/null
+++ b/delta/sfdx-project.json
@@ -0,0 +1 @@
+{"packageDirectories":[{"path":"force-app","default":true,"package":"LWCRecipes","versionName":"Winter '21","versionNumber":"50.0.0.NEXT"}],"namespace":"","sourceApiVersion":"50.0","sfdcLoginUrl":"https://login.salesforce.com","packageAliases":{"LWCRecipes":"0Ho3t000000KywNCAS","LWCRecipes@50.0.0-1":"04t3t000002kqGUAAY","LWCRecipes@50.0.0-5":"04t3t000002kqK7AAI","LWCRecipes@50.0.0-8":"04t3t000002kqPSAAY","LWCRecipes@50.0.0-11":"04t3t000002kqRdAAI","LWCRecipes@50.0.0-12":"04t3t000002kqvvAAA"}}
diff --git a/force-app/main/default/classes/CalculatorService.cls b/force-app/main/default/classes/CalculatorService.cls
new file mode 100644
index 000000000..5ebf0f12b
--- /dev/null
+++ b/force-app/main/default/classes/CalculatorService.cls
@@ -0,0 +1,8 @@
+public with sharing class CalculatorService {
+    public static Integer add(Integer a, integer b) {
+        return a+b;
+    }
+    public static Integer sub(Integer a, integer b) {
+        return a-b;
+    }
+}
diff --git a/force-app/main/default/classes/CalculatorService.cls-meta.xml b/force-app/main/default/classes/CalculatorService.cls-meta.xml
new file mode 100644
index 000000000..541584ff3
--- /dev/null
+++ b/force-app/main/default/classes/CalculatorService.cls-meta.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>50.0</apiVersion>
+    <status>Active</status>
+</ApexClass>
diff --git a/force-app/main/default/labels/CustomLabels.labels-meta.xml b/force-app/main/default/labels/CustomLabels.labels-meta.xml
new file mode 100644
index 000000000..ec4b9e977
--- /dev/null
+++ b/force-app/main/default/labels/CustomLabels.labels-meta.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CustomLabels xmlns="http://soap.sforce.com/2006/04/metadata">
+    <labels>
+        <fullName>TRIGGER_AFTERDELETE</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_AFTERDELETE</shortDescription>
+        <value>TRIGGER_AFTERDELETE</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_AFTERINSERT</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_AFTERINSERT</shortDescription>
+        <value>TRIGGER_AFTERINSERT</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_AFTERUNDELETE</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_AFTERUNDELETE</shortDescription>
+        <value>TRIGGER_AFTERUNDELETE</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_AFTERUPDATE</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_AFTERUPDATE</shortDescription>
+        <value>TRIGGER_AFTERUPDATE</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_BEFOREDELETE</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_BEFOREDELETE</shortDescription>
+        <value>TRIGGER_BEFOREDELETE</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_BEFOREINSERT</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_BEFOREINSERT</shortDescription>
+        <value>TRIGGER_BEFOREINSERT</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_BEFOREUPDATE</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_BEFOREUPDATE</shortDescription>
+        <value>TRIGGER_BEFOREUPDATE</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_NEWLIST</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_NEWLIST</shortDescription>
+        <value>newList</value>
+    </labels>
+    <labels>
+        <fullName>TRIGGER_OLDLIST</fullName>
+        <categories>Trigger framework</categories>
+        <language>en_US</language>
+        <protected>false</protected>
+        <shortDescription>TRIGGER_OLDLIST</shortDescription>
+        <value>oldList</value>
+    </labels>
+</CustomLabels>