Deconflict dev mode block function names again (#3907)

Fixes #3900

package.json

@@ -64,7 +64,7 @@
     "acorn": "^7.1.0",
     "agadoo": "^1.1.0",
     "c8": "^5.0.1",
-    "code-red": "0.0.20",
+    "code-red": "0.0.21",
     "codecov": "^3.5.0",
     "css-tree": "1.0.0-alpha22",
     "eslint": "^6.3.0",

src/compiler/compile/render_dom/Block.ts

@@ -266,7 +266,7 @@ export default class Block {
 					: this.chunks.hydrate
 			);
 
-			properties.create = x`function create() {
+			properties.create = x`function #create() {
 				${this.chunks.create}
 				${hydrate}
 			}`;
@@ -276,23 +276,23 @@ export default class Block {
 			if (this.chunks.claim.length === 0 && this.chunks.hydrate.length === 0) {
 				properties.claim = noop;
 			} else {
-				properties.claim = x`function claim(#nodes) {
+				properties.claim = x`function #claim(#nodes) {
 					${this.chunks.claim}
 					${this.renderer.options.hydratable && this.chunks.hydrate.length > 0 && b`this.h();`}
 				}`;
 			}
 		}
 
 		if (this.renderer.options.hydratable && this.chunks.hydrate.length > 0) {
-			properties.hydrate = x`function hydrate() {
+			properties.hydrate = x`function #hydrate() {
 				${this.chunks.hydrate}
 			}`;
 		}
 
 		if (this.chunks.mount.length === 0) {
 			properties.mount = noop;
 		} else {
-			properties.mount = x`function mount(#target, anchor) {
+			properties.mount = x`function #mount(#target, anchor) {
 				${this.chunks.mount}
 			}`;
 		}
@@ -302,23 +302,23 @@ export default class Block {
 				properties.update = noop;
 			} else {
 				const ctx = this.maintain_context ? x`#new_ctx` : x`#ctx`;
-				properties.update = x`function update(#changed, ${ctx}) {
+				properties.update = x`function #update(#changed, ${ctx}) {
 					${this.maintain_context && b`#ctx = ${ctx};`}
 					${this.chunks.update}
 				}`;
 			}
 		}
 
 		if (this.has_animation) {
-			properties.measure = x`function measure() {
+			properties.measure = x`function #measure() {
 				${this.chunks.measure}
 			}`;
 
-			properties.fix = x`function fix() {
+			properties.fix = x`function #fix() {
 				${this.chunks.fix}
 			}`;
 
-			properties.animate = x`function animate() {
+			properties.animate = x`function #animate() {
 				${this.chunks.animate}
 			}`;
 		}
@@ -327,7 +327,7 @@ export default class Block {
 			if (this.chunks.intro.length === 0) {
 				properties.intro = noop;
 			} else {
-				properties.intro = x`function intro(#local) {
+				properties.intro = x`function #intro(#local) {
 					${this.has_outros && b`if (#current) return;`}
 					${this.chunks.intro}
 				}`;
@@ -336,7 +336,7 @@ export default class Block {
 			if (this.chunks.outro.length === 0) {
 				properties.outro = noop;
 			} else {
-				properties.outro = x`function outro(#local) {
+				properties.outro = x`function #outro(#local) {
 					${this.chunks.outro}
 				}`;
 			}
@@ -345,7 +345,7 @@ export default class Block {
 		if (this.chunks.destroy.length === 0) {
 			properties.destroy = noop;
 		} else {
-			properties.destroy = x`function destroy(detaching) {
+			properties.destroy = x`function #destroy(detaching) {
 				${this.chunks.destroy}
 			}`;
 		}

test/runtime/samples/deconflict-block-methods/_config.js

@@ -0,0 +1,6 @@
+export default {
+	compileOptions: {
+		dev: true
+	},
+	html: `<div>deconflicted</div>`
+};

test/runtime/samples/deconflict-block-methods/main.svelte

@@ -0,0 +1,5 @@
+<script>
+	const create = 'deconflicted';
+</script>
+
+<div>{create}</div>