fix: bug where when adding multiple objects across a yaml tree, we ended up re-using memory which could have downstream effect

Makefile

@@ -1,22 +1,6 @@
 
 SOURCE=$(shell find . -iname "*.go")
 
-web/src/assets/wasm/lib.wasm: $(SOURCE)
-	mkdir -p dist
-	rm -f dist/*
-	cp "$(shell go env GOROOT)/misc/wasm/wasm_exec.js" web/src/assets/wasm/wasm_exec.js
-	GOOS=js GOARCH=wasm go build -o ./web/src/assets/wasm/lib.wasm cmd/wasm/functions.go
-
-.PHONY: tinygo web/src/assets/wasm/lib.tinygo.wasm web/src/assets/wasm/lib.wasm
-tinygo:
-	brew tap tinygo-org/tools
-	brew install tinygo
 
-
-web/src/assets/wasm/lib.tinygo.wasm: $(SOURCE)
-	echo "Not working: requires regex which is not supported by tinygo"
-	exit 1
-	mkdir -p dist
-	rm -f dist/*
-	cp "${shell brew --prefix tinygo}/targets/wasm_exec.js" web/src/assets/wasm/wasm_exec.js
-	GOOS=js GOARCH=wasm tinygo build -target=wasm -o ./web/src/assets/wasm/lib.tinygo.wasm cmd/wasm/functions.go
+web/src/assets/wasm/lib.wasm: $(SOURCE)
+	./build.sh

build.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+readonly SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
+readonly REPO_ROOT="$(git rev-parse --show-toplevel)"
+
+# ANSI color codes
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+NC='\033[0m' # No Color
+
+# Validate Go version higher or equal to than this.
+REQUIRED_GO_VERSION="1.24.1"
+CURRENT_GO_VERSION=$(go version | awk '{print $3}' | sed 's/go//')
+
+if ! echo "$CURRENT_GO_VERSION $REQUIRED_GO_VERSION" | awk '{
+    split($1, current, ".")
+    split($2, required, ".")
+    if ((current[1] > required[1]) || \
+        (current[1] == required[1] && current[2] > required[2]) || \
+        (current[1] == required[1] && current[2] == required[2] && current[3] >= required[3])) {
+        exit 0;
+    }
+    exit 1
+}'; then
+    echo -e "${RED}Error: Go version must be $REQUIRED_GO_VERSION or higher, but found $CURRENT_GO_VERSION${NC}"
+    exit 1
+fi
+
+get_file_size() {
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        BYTES=$(stat -f%z "$1")
+    else
+        BYTES=$(stat -c%s "$1")
+    fi
+    MB=$((BYTES / 1024 / 1024))
+    echo "$MB MB"
+}
+
+# Function to build the WASM binary
+build_wasm() {
+    printf "Installing dependencies... "
+    (cd "$SCRIPT_DIR" && go mod tidy) > /dev/null 2>&1
+    printf "Done\n"
+
+    printf "Building WASM binary..."
+	  GOOS=js GOARCH=wasm go build -o ./web/src/assets/wasm/lib.wasm cmd/wasm/functions.go
+    SIZE="$(get_file_size "./web/src/assets/wasm/lib.wasm")"
+    printf " Done (%s)\n" "$SIZE"
+    cp "$(go env GOROOT)/lib/wasm/wasm_exec.js" "./web/src/assets/wasm/wasm_exec.js"
+
+}
+
+# Initial build
+build_wasm "$VERSION"

pkg/overlay/apply.go

@@ -92,22 +92,22 @@ func applyUpdateAction(root *yaml.Node, action Action) error {
 	nodes := p.Query(root)
 
 	for _, node := range nodes {
-		if err := updateNode(node, action.Update); err != nil {
+		if err := updateNode(node, &action.Update); err != nil {
 			return err
 		}
 	}
 
 	return nil
 }
 
-func updateNode(node *yaml.Node, updateNode yaml.Node) error {
+func updateNode(node *yaml.Node, updateNode *yaml.Node) error {
 	mergeNode(node, updateNode)
 	return nil
 }
 
-func mergeNode(node *yaml.Node, merge yaml.Node) {
+func mergeNode(node *yaml.Node, merge *yaml.Node) {
 	if node.Kind != merge.Kind {
-		*node = merge
+		*node = *clone(merge)
 		return
 	}
 	switch node.Kind {
@@ -122,7 +122,7 @@ func mergeNode(node *yaml.Node, merge yaml.Node) {
 
 // mergeMappingNode will perform a shallow merge of the merge node into the main
 // node.
-func mergeMappingNode(node *yaml.Node, merge yaml.Node) {
+func mergeMappingNode(node *yaml.Node, merge *yaml.Node) {
 NextKey:
 	for i := 0; i < len(merge.Content); i += 2 {
 		mergeKey := merge.Content[i].Value
@@ -131,16 +131,39 @@ NextKey:
 		for j := 0; j < len(node.Content); j += 2 {
 			nodeKey := node.Content[j].Value
 			if nodeKey == mergeKey {
-				mergeNode(node.Content[j+1], *mergeValue)
+				mergeNode(node.Content[j+1], mergeValue)
 				continue NextKey
 			}
 		}
 
-		node.Content = append(node.Content, merge.Content[i], mergeValue)
+		node.Content = append(node.Content, merge.Content[i], clone(mergeValue))
 	}
 }
 
 // mergeSequenceNode will append the merge node's content to the original node.
-func mergeSequenceNode(node *yaml.Node, merge yaml.Node) {
-	node.Content = append(node.Content, merge.Content...)
+func mergeSequenceNode(node *yaml.Node, merge *yaml.Node) {
+	node.Content = append(node.Content, clone(merge).Content...)
+}
+
+func clone(node *yaml.Node) *yaml.Node {
+	newNode := &yaml.Node{
+		Kind:        node.Kind,
+		Style:       node.Style,
+		Tag:         node.Tag,
+		Value:       node.Value,
+		Anchor:      node.Anchor,
+		HeadComment: node.HeadComment,
+		LineComment: node.LineComment,
+		FootComment: node.FootComment,
+	}
+	if node.Alias != nil {
+		newNode.Alias = clone(node.Alias)
+	}
+	if node.Content != nil {
+		newNode.Content = make([]*yaml.Node, len(node.Content))
+		for i, child := range node.Content {
+			newNode.Content[i] = clone(child)
+		}
+	}
+	return newNode
 }

pkg/overlay/compare_test.go

@@ -54,7 +54,7 @@ func TestCompare(t *testing.T) {
 	assert.NoError(t, err)
 
 	// Uncomment this if we've improved the output
-	os.WriteFile("testdata/overlay-generated.yaml", []byte(o2s), 0644)
+	//os.WriteFile("testdata/overlay-generated.yaml", []byte(o2s), 0644)
 	assert.Equal(t, o1s, o2s)
 
 	// round trip it

pkg/overlay/testdata/openapi-overlayed.yaml

@@ -69,12 +69,14 @@ paths:
             X-Optional-Header:
               schema:
                 type: string
+      x-drop: true
   /authenticate:
     post:
       operationId: authenticate
       summary: Authenticate with the API by providing a username and password.
       security: []
       tags:
+        - dont-add-x-drop-false
         - authentication
       requestBody:
         required: true
@@ -103,6 +105,7 @@ paths:
           $ref: "#/components/responses/APIError"
         default:
           $ref: "#/components/responses/UnknownError"
+      x-drop: false
   /drinks:
     x-speakeasy-note:
       "$ref": "./removeNote.yaml"
@@ -138,6 +141,7 @@ paths:
           $ref: "#/components/responses/APIError"
         default:
           $ref: "#/components/responses/UnknownError"
+      x-drop: true
   /order:
     post:
       operationId: createOrder
@@ -195,6 +199,7 @@ paths:
                   $ref: "#/components/responses/APIError"
                 default:
                   $ref: "#/components/responses/UnknownError"
+      x-drop: true
   /webhooks/subscribe:
     post:
       operationId: subscribeToWebhooks
@@ -224,6 +229,7 @@ paths:
           $ref: "#/components/responses/APIError"
         default:
           $ref: "#/components/responses/UnknownError"
+      x-drop: true
 webhooks:
   stockUpdate:
     post:

pkg/overlay/testdata/openapi.yaml

@@ -71,6 +71,7 @@ paths:
       summary: Authenticate with the API by providing a username and password.
       security: []
       tags:
+        - dont-add-x-drop-false
         - authentication
       requestBody:
         required: true

pkg/overlay/testdata/overlay-generated.yaml

@@ -12,6 +12,12 @@ actions:
       servers:
         - url: http://localhost:35123
           description: The default server.
+  - target: $["paths"]["/anything/selectGlobalServer"]["get"]
+    update:
+      x-drop: true
+  - target: $["paths"]["/authenticate"]["post"]
+    update:
+      x-drop: false
   - target: $["paths"]["/drinks"]
     update:
       x-speakeasy-note:
@@ -20,3 +26,12 @@ actions:
     remove: true
   - target: $["paths"]["/drink/{name}"]["get"]
     remove: true
+  - target: $["paths"]["/ingredients"]["get"]
+    update:
+      x-drop: true
+  - target: $["paths"]["/order"]["post"]
+    update:
+      x-drop: true
+  - target: $["paths"]["/webhooks/subscribe"]["post"]
+    update:
+      x-drop: true

pkg/overlay/testdata/overlay.yaml

@@ -42,4 +42,11 @@ actions:
       servers:
         - url: http://localhost:35123
           description: The default server.
-x-top-level-extension: true
+  - target: $.paths.*[[email protected]]
+    description: 'add x-drop: true to all paths'
+    update:
+      x-drop: true
+  - target: $.paths.*[?length(@.tags[?(@ == "dont-add-x-drop-false")]) > 0]
+    description: 'add x-drop: false to any operation which has the dont-add-x-drop-false tag'
+    update:
+      x-drop: false

web/src/assets/wasm/wasm_exec.js

@@ -14,7 +14,7 @@
 	if (!globalThis.fs) {
 		let outputBuf = "";
 		globalThis.fs = {
-			constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
+			constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1, O_DIRECTORY: -1 }, // unused
 			writeSync(fd, buf) {
 				outputBuf += decoder.decode(buf);
 				const nl = outputBuf.lastIndexOf("\n");
@@ -73,6 +73,14 @@
 		}
 	}
 
+	if (!globalThis.path) {
+		globalThis.path = {
+			resolve(...pathSegments) {
+				return pathSegments.join("/");
+			}
+		}
+	}
+
 	if (!globalThis.crypto) {
 		throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
 	}
@@ -208,10 +216,16 @@
 				return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
 			}
 
+			const testCallExport = (a, b) => {
+				this._inst.exports.testExport0();
+				return this._inst.exports.testExport(a, b);
+			}
+
 			const timeOrigin = Date.now() - performance.now();
 			this.importObject = {
 				_gotest: {
 					add: (a, b) => a + b,
+					callExport: testCallExport,
 				},
 				gojs: {
 					// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters)