[REL] v2.0.0-beta-22

# v2.0.0-beta-22

- fix: t-call: nested t-call with magic variable 0
- fix: prevent crash in case with t-foreach, t-out and components

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@odoo/owl",
-  "version": "2.0.0-beta-21",
+  "version": "2.0.0-beta-22",
   "description": "Odoo Web Library (OWL)",
   "main": "dist/owl.cjs.js",
   "module": "dist/owl.es.js",

src/compiler/code_generator.ts

@@ -214,6 +214,14 @@ class CodeTarget {
     result.push(`}`);
     return result.join("\n  ");
   }
+
+  currentKey(ctx: Context) {
+    let key = this.loopLevel ? `key${this.loopLevel}` : "key";
+    if (ctx.tKeyExpr) {
+      key = `${ctx.tKeyExpr} + ${key}`;
+    }
+    return key;
+  }
 }
 
 const TRANSLATABLE_ATTRS = ["label", "title", "placeholder", "alt"];
@@ -365,19 +373,15 @@ export class CodeGenerator {
 
   insertBlock(expression: string, block: BlockDescription, ctx: Context): void {
     let blockExpr = block.generateExpr(expression);
-    const tKeyExpr = ctx.tKeyExpr;
     if (block.parentVar) {
-      let keyArg = `key${this.target.loopLevel}`;
-      if (tKeyExpr) {
-        keyArg = `${tKeyExpr} + ${keyArg}`;
-      }
+      let key = this.target.currentKey(ctx);
       this.helpers.add("withKey");
-      this.addLine(`${block.parentVar}[${ctx.index}] = withKey(${blockExpr}, ${keyArg});`);
+      this.addLine(`${block.parentVar}[${ctx.index}] = withKey(${blockExpr}, ${key});`);
       return;
     }
 
-    if (tKeyExpr) {
-      blockExpr = `toggler(${tKeyExpr}, ${blockExpr})`;
+    if (ctx.tKeyExpr) {
+      blockExpr = `toggler(${ctx.tKeyExpr}, ${blockExpr})`;
     }
 
     if (block.isRoot && !ctx.preventRoot) {
@@ -424,78 +428,66 @@ export class CodeGenerator {
       .join("");
   }
 
-  compileAST(ast: AST, ctx: Context) {
+  /**
+   * @returns the newly created block name, if any
+   */
+  compileAST(ast: AST, ctx: Context): string | null {
     switch (ast.type) {
       case ASTType.Comment:
-        this.compileComment(ast, ctx);
-        break;
+        return this.compileComment(ast, ctx);
       case ASTType.Text:
-        this.compileText(ast, ctx);
-        break;
+        return this.compileText(ast, ctx);
       case ASTType.DomNode:
-        this.compileTDomNode(ast, ctx);
-        break;
+        return this.compileTDomNode(ast, ctx);
       case ASTType.TEsc:
-        this.compileTEsc(ast, ctx);
-        break;
+        return this.compileTEsc(ast, ctx);
       case ASTType.TOut:
-        this.compileTOut(ast, ctx);
-        break;
+        return this.compileTOut(ast, ctx);
       case ASTType.TIf:
-        this.compileTIf(ast, ctx);
-        break;
+        return this.compileTIf(ast, ctx);
       case ASTType.TForEach:
-        this.compileTForeach(ast, ctx);
-        break;
+        return this.compileTForeach(ast, ctx);
       case ASTType.TKey:
-        this.compileTKey(ast, ctx);
-        break;
+        return this.compileTKey(ast, ctx);
       case ASTType.Multi:
-        this.compileMulti(ast, ctx);
-        break;
+        return this.compileMulti(ast, ctx);
       case ASTType.TCall:
-        this.compileTCall(ast, ctx);
-        break;
+        return this.compileTCall(ast, ctx);
       case ASTType.TCallBlock:
-        this.compileTCallBlock(ast, ctx);
-        break;
+        return this.compileTCallBlock(ast, ctx);
       case ASTType.TSet:
-        this.compileTSet(ast, ctx);
-        break;
+        return this.compileTSet(ast, ctx);
       case ASTType.TComponent:
-        this.compileComponent(ast, ctx);
-        break;
+        return this.compileComponent(ast, ctx);
       case ASTType.TDebug:
-        this.compileDebug(ast, ctx);
-        break;
+        return this.compileDebug(ast, ctx);
       case ASTType.TLog:
-        this.compileLog(ast, ctx);
-        break;
+        return this.compileLog(ast, ctx);
       case ASTType.TSlot:
-        this.compileTSlot(ast, ctx);
-        break;
+        return this.compileTSlot(ast, ctx);
       case ASTType.TTranslation:
-        this.compileTTranslation(ast, ctx);
-        break;
+        return this.compileTTranslation(ast, ctx);
       case ASTType.TPortal:
-        this.compileTPortal(ast, ctx);
+        return this.compileTPortal(ast, ctx);
     }
   }
 
-  compileDebug(ast: ASTDebug, ctx: Context) {
+  compileDebug(ast: ASTDebug, ctx: Context): string | null {
     this.addLine(`debugger;`);
     if (ast.content) {
-      this.compileAST(ast.content, ctx);
+      return this.compileAST(ast.content, ctx);
     }
+    return null;
   }
 
-  compileLog(ast: ASTLog, ctx: Context) {
+  compileLog(ast: ASTLog, ctx: Context): string | null {
     this.addLine(`console.log(${compileExpr(ast.expr)});`);
     if (ast.content) {
-      this.compileAST(ast.content, ctx);
+      return this.compileAST(ast.content, ctx);
     }
+    return null;
   }
-  compileComment(ast: ASTComment, ctx: Context) {
+  compileComment(ast: ASTComment, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
     const isNewBlock = !block || forceNewBlock;
     if (isNewBlock) {
@@ -508,9 +500,10 @@ export class CodeGenerator {
       const text = xmlDoc.createComment(ast.value);
       block!.insert(text);
     }
+    return block!.varName;
   }
 
-  compileText(ast: ASTText, ctx: Context) {
+  compileText(ast: ASTText, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
 
     let value = ast.value;
@@ -529,6 +522,7 @@ export class CodeGenerator {
       const createFn = ast.type === ASTType.Text ? xmlDoc.createTextNode : xmlDoc.createComment;
       block.insert(createFn.call(xmlDoc, value));
     }
+    return block.varName;
   }
 
   generateHandlerCode(rawEvent: string, handler: string): string {
@@ -548,7 +542,7 @@ export class CodeGenerator {
     return `[${modifiersCode}${this.captureExpression(handler)}, ctx]`;
   }
 
-  compileTDomNode(ast: ASTDomNode, ctx: Context) {
+  compileTDomNode(ast: ASTDomNode, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
     const isNewBlock = !block || forceNewBlock || ast.dynamicTag !== null || ast.ns;
     let codeIdx = this.target.code.length;
@@ -735,9 +729,10 @@ export class CodeGenerator {
         this.addLine(`let ${block!.children.map((c) => c.varName)};`, codeIdx);
       }
     }
+    return block!.varName;
   }
 
-  compileTEsc(ast: ASTTEsc, ctx: Context) {
+  compileTEsc(ast: ASTTEsc, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
     let expr: string;
     if (ast.expr === "0") {
@@ -758,9 +753,10 @@ export class CodeGenerator {
       const text = xmlDoc.createElement(`block-text-${idx}`);
       block.insert(text);
     }
+    return block.varName;
   }
 
-  compileTOut(ast: ASTTOut, ctx: Context) {
+  compileTOut(ast: ASTTOut, ctx: Context): string {
     let { block } = ctx;
     if (block) {
       this.insertAnchor(block);
@@ -782,6 +778,7 @@ export class CodeGenerator {
       blockStr = `safeOutput(${compileExpr(ast.expr)})`;
     }
     this.insertBlock(blockStr, block, ctx);
+    return block.varName;
   }
 
   compileTIfBranch(content: AST, block: BlockDescription, ctx: Context) {
@@ -795,7 +792,7 @@ export class CodeGenerator {
     this.target.indentLevel--;
   }
 
-  compileTIf(ast: ASTTif, ctx: Context, nextNode?: ASTDomNode) {
+  compileTIf(ast: ASTTif, ctx: Context, nextNode?: ASTDomNode): string {
     let { block, forceNewBlock } = ctx;
     const codeIdx = this.target.code.length;
     const isNewBlock = !block || (block.type !== "multi" && forceNewBlock);
@@ -838,9 +835,10 @@ export class CodeGenerator {
       const args = block!.children.map((c) => c.varName).join(", ");
       this.insertBlock(`multi([${args}])`, block!, ctx)!;
     }
+    return block.varName;
   }
 
-  compileTForeach(ast: ASTTForEach, ctx: Context) {
+  compileTForeach(ast: ASTTForEach, ctx: Context): string {
     let { block } = ctx;
     if (block) {
       this.insertAnchor(block);
@@ -918,9 +916,10 @@ export class CodeGenerator {
       this.addLine(`ctx = ctx.__proto__;`);
     }
     this.insertBlock("l", block, ctx);
+    return block.varName;
   }
 
-  compileTKey(ast: ASTTKey, ctx: Context) {
+  compileTKey(ast: ASTTKey, ctx: Context): string | null {
     const tKeyExpr = generateId("tKey_");
     this.define(tKeyExpr, compileExpr(ast.expr));
     ctx = createContext(ctx, {
@@ -928,20 +927,22 @@ export class CodeGenerator {
       block: ctx.block,
       index: ctx.index,
     });
-    this.compileAST(ast.content, ctx);
+    return this.compileAST(ast.content, ctx);
   }
 
-  compileMulti(ast: ASTMulti, ctx: Context) {
+  compileMulti(ast: ASTMulti, ctx: Context): string | null {
     let { block, forceNewBlock } = ctx;
     const isNewBlock = !block || forceNewBlock;
     let codeIdx = this.target.code.length;
     if (isNewBlock) {
       const n = ast.content.filter((c) => c.type !== ASTType.TSet).length;
+      let result: string | null = null;
       if (n <= 1) {
         for (let child of ast.content) {
-          this.compileAST(child, ctx);
+          const blockName = this.compileAST(child, ctx);
+          result = result || blockName;
         }
-        return;
+        return result;
       }
       block = this.createBlock(block, "multi", ctx);
     }
@@ -981,9 +982,10 @@ export class CodeGenerator {
       const args = block!.children.map((c) => c.varName).join(", ");
       this.insertBlock(`multi([${args}])`, block!, ctx)!;
     }
+    return block!.varName;
   }
 
-  compileTCall(ast: ASTTCall, ctx: Context) {
+  compileTCall(ast: ASTTCall, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
     let ctxVar = ctx.ctxVar || "ctx";
     if (ast.context) {
@@ -994,12 +996,11 @@ export class CodeGenerator {
       this.addLine(`${ctxVar} = Object.create(${ctxVar});`);
       this.addLine(`${ctxVar}[isBoundary] = 1;`);
       this.helpers.add("isBoundary");
-      const nextId = BlockDescription.nextBlockId;
       const subCtx = createContext(ctx, { preventRoot: true, ctxVar });
-      this.compileAST({ type: ASTType.Multi, content: ast.body }, subCtx);
-      if (nextId !== BlockDescription.nextBlockId) {
+      const bl = this.compileMulti({ type: ASTType.Multi, content: ast.body }, subCtx);
+      if (bl) {
         this.helpers.add("zero");
-        this.addLine(`${ctxVar}[zero] = b${nextId};`);
+        this.addLine(`${ctxVar}[zero] = ${bl};`);
       }
     }
     const isDynamic = INTERP_REGEXP.test(ast.name);
@@ -1033,9 +1034,10 @@ export class CodeGenerator {
     if (ast.body && !ctx.isLast) {
       this.addLine(`${ctxVar} = ${ctxVar}.__proto__;`);
     }
+    return block.varName;
   }
 
-  compileTCallBlock(ast: ASTTCallBlock, ctx: Context) {
+  compileTCallBlock(ast: ASTTCallBlock, ctx: Context): string {
     let { block, forceNewBlock } = ctx;
     if (block) {
       if (!forceNewBlock) {
@@ -1044,9 +1046,10 @@ export class CodeGenerator {
     }
     block = this.createBlock(block, "multi", ctx);
     this.insertBlock(compileExpr(ast.name), block, { ...ctx, forceNewBlock: !block });
+    return block.varName;
   }
 
-  compileTSet(ast: ASTTSet, ctx: Context) {
+  compileTSet(ast: ASTTSet, ctx: Context): null {
     this.target.shouldProtectScope = true;
     this.helpers.add("isBoundary").add("withDefault");
     const expr = ast.value ? compileExpr(ast.value || "") : "null";
@@ -1054,7 +1057,8 @@ export class CodeGenerator {
       this.helpers.add("LazyValue");
       const bodyAst: AST = { type: ASTType.Multi, content: ast.body };
       const name = this.compileInNewTarget("value", bodyAst, ctx);
-      let value = `new LazyValue(${name}, ctx, this, node)`;
+      let key = this.target.currentKey(ctx);
+      let value = `new LazyValue(${name}, ctx, this, node, ${key})`;
       value = ast.value ? (value ? `withDefault(${expr}, ${value})` : expr) : value;
       this.addLine(`ctx[\`${ast.name}\`] = ${value};`);
     } else {
@@ -1071,6 +1075,7 @@ export class CodeGenerator {
       this.helpers.add("setContextValue");
       this.addLine(`setContextValue(${ctx.ctxVar || "ctx"}, "${ast.name}", ${value});`);
     }
+    return null;
   }
 
   generateComponentKey() {
@@ -1122,7 +1127,7 @@ export class CodeGenerator {
     return propString;
   }
 
-  compileComponent(ast: ASTComponent, ctx: Context) {
+  compileComponent(ast: ASTComponent, ctx: Context): string {
     let { block } = ctx;
     // props
     const hasSlotsProp = "slots" in (ast.props || {});
@@ -1222,6 +1227,7 @@ export class CodeGenerator {
 
     block = this.createBlock(block, "multi", ctx);
     this.insertBlock(blockExpr, block, ctx);
+    return block.varName;
   }
 
   wrapWithEventCatcher(expr: string, on: EventHandlers): string {
@@ -1240,7 +1246,7 @@ export class CodeGenerator {
     return `${name}(${expr}, [${handlers.join(",")}])`;
   }
 
-  compileTSlot(ast: ASTSlot, ctx: Context) {
+  compileTSlot(ast: ASTSlot, ctx: Context): string {
     this.helpers.add("callSlot");
     let { block } = ctx;
     let blockString: string;
@@ -1289,14 +1295,16 @@ export class CodeGenerator {
     }
     block = this.createBlock(block, "multi", ctx);
     this.insertBlock(blockString, block, { ...ctx, forceNewBlock: false });
+    return block.varName;
   }
 
-  compileTTranslation(ast: ASTTranslation, ctx: Context) {
+  compileTTranslation(ast: ASTTranslation, ctx: Context): string | null {
     if (ast.content) {
-      this.compileAST(ast.content, Object.assign({}, ctx, { translate: false }));
+      return this.compileAST(ast.content, Object.assign({}, ctx, { translate: false }));
     }
+    return null;
   }
-  compileTPortal(ast: ASTTPortal, ctx: Context) {
+  compileTPortal(ast: ASTTPortal, ctx: Context): string {
     if (!this.staticDefs.find((d) => d.id === "Portal")) {
       this.staticDefs.push({ id: "Portal", expr: `app.Portal` });
     }
@@ -1323,5 +1331,6 @@ export class CodeGenerator {
     }
     block = this.createBlock(block, "multi", ctx);
     this.insertBlock(blockString, block, { ...ctx, forceNewBlock: false });
+    return block.varName;
   }
 }

src/runtime/template_helpers.ts

@@ -111,15 +111,18 @@ class LazyValue {
   ctx: any;
   component: any;
   node: any;
-  constructor(fn: any, ctx: any, component: any, node: any) {
+  key: any;
+
+  constructor(fn: any, ctx: any, component: any, node: any, key: any) {
     this.fn = fn;
     this.ctx = capture(ctx);
     this.component = component;
     this.node = node;
+    this.key = key;
   }
 
   evaluate(): any {
-    return this.fn.call(this.component, this.ctx, this.node);
+    return this.fn.call(this.component, this.ctx, this.node, this.key);
   }
 
   toString() {

tests/compiler/__snapshots__/t_call.test.ts.snap

@@ -334,6 +334,57 @@ exports[`t-call (template calling) inherit context 2`] = `
 }"
 `;
 
+exports[`t-call (template calling) nested t-calls with magic variable 0 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { isBoundary, zero } = helpers;
+  const callTemplate_1 = app.getTemplate(\`grandchild\`);
+  const callTemplate_2 = app.getTemplate(\`child\`);
+  
+  let block1 = createBlock(\`<p>Some content...</p>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    ctx = Object.create(ctx);
+    ctx[isBoundary] = 1;
+    ctx = Object.create(ctx);
+    ctx[isBoundary] = 1;
+    const b1 = block1();
+    ctx[zero] = b1;
+    const b2 = callTemplate_1.call(this, ctx, node, key + \`__1\`);
+    ctx = ctx.__proto__;
+    ctx[zero] = b2;
+    return callTemplate_2.call(this, ctx, node, key + \`__2\`);
+  }
+}"
+`;
+
+exports[`t-call (template calling) nested t-calls with magic variable 0 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { zero } = helpers;
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = text(\`grandchild\`);
+    const b3 = ctx[zero];
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`t-call (template calling) nested t-calls with magic variable 0 3`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { zero } = helpers;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return ctx[zero];
+  }
+}"
+`;
+
 exports[`t-call (template calling) recursive template, part 1 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/compiler/__snapshots__/t_esc.test.ts.snap

@@ -126,7 +126,7 @@ exports[`t-esc t-esc is escaped 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`var\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`var\`] = new LazyValue(value1, ctx, this, node, key);
     let txt1 = ctx['var'];
     return block1([txt1]);
   }

tests/compiler/__snapshots__/t_out.test.ts.snap

@@ -161,7 +161,7 @@ exports[`t-out t-out bdom 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`var\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`var\`] = new LazyValue(value1, ctx, this, node, key);
     const b3 = safeOutput(ctx['var']);
     return block1([], [b3]);
   }
@@ -310,7 +310,7 @@ exports[`t-out t-out switch markup on bdom 1`] = `
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
     let b3,b5;
-    ctx[\`bdom\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`bdom\`] = new LazyValue(value1, ctx, this, node, key);
     if (ctx['hasBdom']) {
       const b4 = safeOutput(ctx['bdom']);
       b3 = block3([], [b4]);

tests/compiler/__snapshots__/t_set.test.ts.snap

@@ -106,7 +106,7 @@ exports[`t-set set from body literal (with t-if/t-else 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`value\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`value\`] = new LazyValue(value1, ctx, this, node, key);
     return text(ctx['value']);
   }
 }"
@@ -142,7 +142,7 @@ exports[`t-set set from body lookup 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`stuff\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`stuff\`] = new LazyValue(value1, ctx, this, node, key);
     let txt1 = ctx['stuff'];
     return block1([txt1]);
   }
@@ -206,7 +206,7 @@ exports[`t-set t-set body is evaluated immediately 1`] = `
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
     setContextValue(ctx, \\"v1\\", 'before');
-    ctx[\`v2\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v2\`] = new LazyValue(value1, ctx, this, node, key);
     setContextValue(ctx, \\"v1\\", 'after');
     const b3 = safeOutput(ctx['v2']);
     return block1([], [b3]);
@@ -471,7 +471,7 @@ exports[`t-set t-set with content and sub t-esc 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`setvar\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`setvar\`] = new LazyValue(value1, ctx, this, node, key);
     let txt1 = ctx['setvar'];
     return block1([txt1]);
   }
@@ -497,7 +497,7 @@ exports[`t-set t-set with t-value (falsy) and body 1`] = `
     ctx[isBoundary] = 1
     setContextValue(ctx, \\"v3\\", false);
     setContextValue(ctx, \\"v1\\", 'before');
-    ctx[\`v2\`] = withDefault(ctx['v3'], new LazyValue(value1, ctx, this, node));
+    ctx[\`v2\`] = withDefault(ctx['v3'], new LazyValue(value1, ctx, this, node, key));
     setContextValue(ctx, \\"v1\\", 'after');
     setContextValue(ctx, \\"v3\\", true);
     const b3 = safeOutput(ctx['v2']);
@@ -525,7 +525,7 @@ exports[`t-set t-set with t-value (truthy) and body 1`] = `
     ctx[isBoundary] = 1
     setContextValue(ctx, \\"v3\\", 'Truthy');
     setContextValue(ctx, \\"v1\\", 'before');
-    ctx[\`v2\`] = withDefault(ctx['v3'], new LazyValue(value1, ctx, this, node));
+    ctx[\`v2\`] = withDefault(ctx['v3'], new LazyValue(value1, ctx, this, node, key));
     setContextValue(ctx, \\"v1\\", 'after');
     setContextValue(ctx, \\"v3\\", false);
     const b3 = safeOutput(ctx['v2']);
@@ -638,7 +638,7 @@ exports[`t-set value priority (with non text body 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`value\`] = withDefault(1, new LazyValue(value1, ctx, this, node));
+    ctx[\`value\`] = withDefault(1, new LazyValue(value1, ctx, this, node, key));
     let txt1 = ctx['value'];
     return block1([txt1]);
   }

tests/compiler/t_call.test.ts

@@ -479,4 +479,21 @@ describe("t-call (template calling)", () => {
       "<span>123lucas</span>"
     );
   });
+
+  test("nested t-calls with magic variable 0", () => {
+    const context = new TestContext();
+    context.addTemplate("grandchild", `grandchild<t t-out="0"/>`);
+    context.addTemplate("child", `<t t-out="0"/>`);
+    context.addTemplate(
+      "main",
+      `
+        <t t-call="child">
+            <t t-call="grandchild">
+                <p>Some content...</p>
+            </t>
+        </t>`
+    );
+
+    expect(context.renderToString("main")).toBe("grandchild<p>Some content...</p>");
+  });
 });

tests/components/__snapshots__/props.test.ts.snap

@@ -163,7 +163,7 @@ exports[`basics t-set with a body expression can be passed in props, and then t-
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`abc\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`abc\`] = new LazyValue(value1, ctx, this, node, key);
     const b3 = comp1({val: ctx['abc']}, key + \`__1\`, node, this, null);
     return block1([], [b3]);
   }

tests/components/__snapshots__/t_out.test.ts.snap

@@ -0,0 +1,39 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`components in t-out simple list 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { prepareList, isBoundary, withDefault, LazyValue, safeOutput, withKey } = helpers;
+  const comp1 = app.createComponent(\`Child\`, true, false, false, true);
+  
+  function value1(ctx, node, key = \\"\\") {
+    return comp1({}, key + \`__1\`, node, this, null);
+  }
+  
+  return function template(ctx, node, key = \\"\\") {
+    ctx = Object.create(ctx);
+    ctx[isBoundary] = 1
+    ctx = Object.create(ctx);
+    const [k_block1, v_block1, l_block1, c_block1] = prepareList([1,2]);;
+    for (let i1 = 0; i1 < l_block1; i1++) {
+      ctx[\`n\`] = v_block1[i1];
+      const key1 = ctx['n'];
+      ctx[\`blabla\`] = new LazyValue(value1, ctx, this, node, key1);
+      c_block1[i1] = withKey(safeOutput(ctx['blabla']), key1);
+    }
+    return list(c_block1);
+  }
+}"
+`;
+
+exports[`components in t-out simple list 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`child\`);
+  }
+}"
+`;

tests/components/__snapshots__/t_set.test.ts.snap

@@ -59,7 +59,7 @@ exports[`t-set slots with a t-set with a component in body 1`] = `
   function slot1(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`v\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v\`] = new LazyValue(value1, ctx, this, node, key);
     const b3 = text(\` in slot \`);
     const b4 = safeOutput(ctx['v']);
     return multi([b3, b4]);
@@ -114,7 +114,7 @@ exports[`t-set slots with an t-set with a component in body 1`] = `
   function slot1(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`v\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v\`] = new LazyValue(value1, ctx, this, node, key);
     const b5 = text(\` tea \`);
     const b6 = safeOutput(ctx['v']);
     return multi([b5, b6]);
@@ -169,7 +169,7 @@ exports[`t-set slots with an unused t-set with a component in body 1`] = `
   function slot1(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`v\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v\`] = new LazyValue(value1, ctx, this, node, key);
     return text(\` in slot \`);
   }
   
@@ -343,7 +343,7 @@ exports[`t-set t-set with a component in body 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`v\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v\`] = new LazyValue(value1, ctx, this, node, key);
     const b3 = safeOutput(ctx['v']);
     return block1([], [b3]);
   }
@@ -377,7 +377,7 @@ exports[`t-set t-set with something in body 1`] = `
   return function template(ctx, node, key = \\"\\") {
     ctx = Object.create(ctx);
     ctx[isBoundary] = 1
-    ctx[\`v\`] = new LazyValue(value1, ctx, this, node);
+    ctx[\`v\`] = new LazyValue(value1, ctx, this, node, key);
     const b3 = safeOutput(ctx['v']);
     return block1([], [b3]);
   }

tests/components/t_out.test.ts

@@ -0,0 +1,36 @@
+import { Component, mount, xml } from "../../src/index";
+import { makeTestFixture, snapshotEverything } from "../helpers";
+
+snapshotEverything();
+
+// -----------------------------------------------------------------------------
+// t-out
+// -----------------------------------------------------------------------------
+
+describe("components in t-out", () => {
+  let fixture: HTMLElement;
+
+  beforeEach(() => {
+    fixture = makeTestFixture();
+  });
+
+  test("simple list", async () => {
+    class Child extends Component {
+      static template = xml`child`;
+    }
+
+    class Parent extends Component {
+      static template = xml`
+                <t t-foreach="[1,2]" t-as="n" t-key="n">
+                  <t t-set="blabla">
+                    <Child />
+                  </t>
+                  <t t-out="blabla"/>
+                </t>`;
+      static components = { Child };
+    }
+
+    await mount(Parent, fixture);
+    expect(fixture.innerHTML).toBe("childchild");
+  });
+});