diff --git a/src/qweb.ts b/src/qweb.ts
index 68e4d61f..ff9232b5 100644
--- a/src/qweb.ts
+++ b/src/qweb.ts
@@ -58,7 +58,7 @@ export class Context {
   constructor(name?: string) {
     this.rootContext = this;
     this.templateName = name || "noname";
-    this.addLine("let h = this.utils.h;");
+    this.addLine("var h = this.utils.h;");
   }
 
   generateID(): number {
@@ -404,7 +404,7 @@ export class QWeb {
         // this is an unusual situation: this text node is the result of the
         // template rendering.
         let nodeID = ctx.generateID();
-        ctx.addLine(`let vn${nodeID} = {text: \`${text}\`};`);
+        ctx.addLine(`var vn${nodeID} = {text: \`${text}\`};`);
         ctx.rootContext.rootNode = nodeID;
         ctx.rootContext.parentNode = nodeID;
       }
@@ -534,7 +534,7 @@ export class QWeb {
         !(<Element>node).getAttribute("t-attf-" + name)
       ) {
         const attID = ctx.generateID();
-        ctx.addLine(`let _${attID} = '${value}';`);
+        ctx.addLine(`var _${attID} = '${value}';`);
         if (!name.match(/^[a-zA-Z]+$/)) {
           // attribute contains 'non letters' => we want to quote it
           name = '"' + name + '"';
@@ -563,14 +563,14 @@ export class QWeb {
         const attValue = (<Element>node).getAttribute(attName);
         if (attValue) {
           const attValueID = ctx.generateID();
-          ctx.addLine(`let _${attValueID} = ${formattedValue};`);
+          ctx.addLine(`var _${attValueID} = ${formattedValue};`);
           formattedValue = `'${attValue}' + (_${attValueID} ? ' ' + _${attValueID} : '')`;
           const attrIndex = attrs.findIndex(att =>
             att.startsWith(attName + ":")
           );
           attrs.splice(attrIndex, 1);
         }
-        ctx.addLine(`let _${attID} = ${formattedValue};`);
+        ctx.addLine(`var _${attID} = ${formattedValue};`);
         attrs.push(`${attName}: _${attID}`);
         handleBooleanProps(attName, attID);
       }
@@ -589,10 +589,10 @@ export class QWeb {
         let staticVal = (<Element>node).getAttribute(attName);
         if (staticVal) {
           ctx.addLine(
-            `let _${attID} = '${staticVal} ' + \`${formattedExpr}\`;`
+            `var _${attID} = '${staticVal} ' + \`${formattedExpr}\`;`
           );
         } else {
-          ctx.addLine(`let _${attID} = \`${formattedExpr}\`;`);
+          ctx.addLine(`var _${attID} = \`${formattedExpr}\`;`);
         }
         attrs.push(`${attName}: _${attID}`);
       }
@@ -600,7 +600,7 @@ export class QWeb {
       // t-att= attributes
       if (name === "t-att") {
         let id = ctx.generateID();
-        ctx.addLine(`let _${id} = ${ctx.formatExpression(value!)};`);
+        ctx.addLine(`var _${id} = ${ctx.formatExpression(value!)};`);
         tattrs.push(id);
       }
     }
@@ -616,7 +616,7 @@ export class QWeb {
       parts.push(`on:{}`);
     }
 
-    ctx.addLine(`let c${nodeID} = [], p${nodeID} = {${parts.join(",")}};`);
+    ctx.addLine(`var c${nodeID} = [], p${nodeID} = {${parts.join(",")}};`);
     for (let id of tattrs) {
       ctx.addIf(`_${id} instanceof Array`);
       ctx.addLine(`p${nodeID}.attrs[_${id}[0]] = _${id}[1];`);
@@ -629,7 +629,7 @@ export class QWeb {
       ctx.closeIf();
     }
     ctx.addLine(
-      `let vn${nodeID} = h('${node.nodeName}', p${nodeID}, c${nodeID});`
+      `var vn${nodeID} = h('${node.nodeName}', p${nodeID}, c${nodeID});`
     );
     if (ctx.parentNode) {
       ctx.addLine(`c${ctx.parentNode}.push(vn${nodeID});`);
@@ -678,7 +678,7 @@ function compileValueNode(value: any, node: Element, qweb: QWeb, ctx: Context) {
 
   if (typeof value === "string") {
     const exprID = ctx.generateID();
-    ctx.addLine(`let e${exprID} = ${ctx.formatExpression(value)};`);
+    ctx.addLine(`var e${exprID} = ${ctx.formatExpression(value)};`);
     ctx.addIf(`e${exprID} || e${exprID} === 0`);
     let text = `e${exprID}`;
 
@@ -689,14 +689,14 @@ function compileValueNode(value: any, node: Element, qweb: QWeb, ctx: Context) {
       ctx.addLine(`c${ctx.parentNode}.push({text: ${text}});`);
     } else {
       let fragID = ctx.generateID();
-      ctx.addLine(`let frag${fragID} = this.utils.getFragment(e${exprID})`);
+      ctx.addLine(`var frag${fragID} = this.utils.getFragment(e${exprID})`);
       let tempNodeID = ctx.generateID();
-      ctx.addLine(`let p${tempNodeID} = {hook: {`);
+      ctx.addLine(`var p${tempNodeID} = {hook: {`);
       ctx.addLine(
         `  insert: n => n.elm.parentNode.replaceChild(frag${fragID}, n.elm),`
       );
       ctx.addLine(`}};`);
-      ctx.addLine(`let vn${tempNodeID} = h('div', p${tempNodeID})`);
+      ctx.addLine(`var vn${tempNodeID} = h('div', p${tempNodeID})`);
       ctx.addLine(`c${ctx.parentNode}.push(vn${tempNodeID});`);
     }
     if (node.childNodes.length) {
@@ -833,7 +833,7 @@ const forEachDirective: Directive = {
     const elems = node.getAttribute("t-foreach")!;
     const name = node.getAttribute("t-as")!;
     let arrayID = ctx.generateID();
-    ctx.addLine(`let _${arrayID} = ${ctx.formatExpression(elems)};`);
+    ctx.addLine(`var _${arrayID} = ${ctx.formatExpression(elems)};`);
     ctx.addLine(
       `if (!_${arrayID}) { throw new Error('QWeb error: Invalid loop expression')}`
     );
@@ -842,11 +842,11 @@ const forEachDirective: Directive = {
     );
     let keysID = ctx.generateID();
     ctx.addLine(
-      `let _${keysID} = _${arrayID} instanceof Array ? _${arrayID} : Object.keys(_${arrayID});`
+      `var _${keysID} = _${arrayID} instanceof Array ? _${arrayID} : Object.keys(_${arrayID});`
     );
     let valuesID = ctx.generateID();
     ctx.addLine(
-      `let _${valuesID} = _${arrayID} instanceof Array ? _${arrayID} : Object.values(_${arrayID});`
+      `var _${valuesID} = _${arrayID} instanceof Array ? _${arrayID} : Object.values(_${arrayID});`
     );
     ctx.addLine(`for (let i = 0; i < _${keysID}.length; i++) {`);
     ctx.indent();
diff --git a/tests/__snapshots__/component.test.ts.snap b/tests/__snapshots__/component.test.ts.snap
index 03532811..ef05566a 100644
--- a/tests/__snapshots__/component.test.ts.snap
+++ b/tests/__snapshots__/component.test.ts.snap
@@ -5,14 +5,14 @@ exports[`composition sub widgets with some state rendered in a loop 1`] = `
 ) {
     let owner = context;
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = context['state'].numbers;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = context['state'].numbers;
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.number_first = i === 0;
         context.number_last = i === _3.length - 1;
@@ -65,9 +65,9 @@ exports[`random stuff/miscellaneous snapshotting compiled code 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     //WIDGET
     let key5 = \\"somestring\\";
     let _2_index = c1.length;
@@ -112,9 +112,9 @@ exports[`random stuff/miscellaneous t-props should not be undefined (snapshottin
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     //WIDGET
     let _2_index = c1.length;
     c1.push(null);
diff --git a/tests/__snapshots__/qweb.test.ts.snap b/tests/__snapshots__/qweb.test.ts.snap
index b6cac985..aaa0b878 100644
--- a/tests/__snapshots__/qweb.test.ts.snap
+++ b/tests/__snapshots__/qweb.test.ts.snap
@@ -3,10 +3,10 @@
 exports[`attributes dynamic attribute falsy variable  1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = context['value'];
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = context['value'];
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -14,10 +14,10 @@ exports[`attributes dynamic attribute falsy variable  1`] = `
 exports[`attributes dynamic attribute with a dash 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = context['id'];
-    let c2 = [], p2 = {key:2,attrs:{\\"data-action-id\\": _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = context['id'];
+    var c2 = [], p2 = {key:2,attrs:{\\"data-action-id\\": _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -25,10 +25,10 @@ exports[`attributes dynamic attribute with a dash 1`] = `
 exports[`attributes dynamic attributes 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'bar';
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = 'bar';
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -36,10 +36,10 @@ exports[`attributes dynamic attributes 1`] = `
 exports[`attributes dynamic formatted attributes with a dash 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = \`Some text \${context['id']}\`;
-    let c2 = [], p2 = {key:2,attrs:{\\"aria-label\\": _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = \`Some text \${context['id']}\`;
+    var c2 = [], p2 = {key:2,attrs:{\\"aria-label\\": _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -47,10 +47,10 @@ exports[`attributes dynamic formatted attributes with a dash 1`] = `
 exports[`attributes fixed variable 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = context['value'];
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = context['value'];
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -58,10 +58,10 @@ exports[`attributes fixed variable 1`] = `
 exports[`attributes format expression 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = \`\${context['value'] + 37}\`;
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = \`\${context['value'] + 37}\`;
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -69,10 +69,10 @@ exports[`attributes format expression 1`] = `
 exports[`attributes format literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = \`bar\`;
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = \`bar\`;
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -80,10 +80,10 @@ exports[`attributes format literal 1`] = `
 exports[`attributes format multiple 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = \`a \${context['value1']} is \${context['value2']} of \${context['value3']} ]\`;
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = \`a \${context['value1']} is \${context['value2']} of \${context['value3']} ]\`;
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -91,10 +91,10 @@ exports[`attributes format multiple 1`] = `
 exports[`attributes format value 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = \`b\${context['value']}r\`;
-    let c2 = [], p2 = {key:2,attrs:{foo: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = \`b\${context['value']}r\`;
+    var c2 = [], p2 = {key:2,attrs:{foo: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -102,12 +102,12 @@ exports[`attributes format value 1`] = `
 exports[`attributes from object variables set previously 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = {a:'b'}.a;
-    let c3 = [], p3 = {key:3,attrs:{class: _2}};
-    let vn3 = h('span', p3, c3);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = {a:'b'}.a;
+    var c3 = [], p3 = {key:3,attrs:{class: _2}};
+    var vn3 = h('span', p3, c3);
     c1.push(vn3);
     return vn1;
 }"
@@ -116,12 +116,12 @@ exports[`attributes from object variables set previously 1`] = `
 exports[`attributes from variables set previously 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = 'def';
-    let c3 = [], p3 = {key:3,attrs:{class: _2}};
-    let vn3 = h('span', p3, c3);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = 'def';
+    var c3 = [], p3 = {key:3,attrs:{class: _2}};
+    var vn3 = h('span', p3, c3);
     c1.push(vn3);
     return vn1;
 }"
@@ -130,9 +130,9 @@ exports[`attributes from variables set previously 1`] = `
 exports[`attributes object 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = context['value'];
-    let c2 = [], p2 = {key:2,attrs:{}};
+    var h = this.utils.h;
+    var _1 = context['value'];
+    var c2 = [], p2 = {key:2,attrs:{}};
     if (_1 instanceof Array) {
         p2.attrs[_1[0]] = _1[1];
     } else {
@@ -140,7 +140,7 @@ exports[`attributes object 1`] = `
             p2.attrs[key] = _1[key];
         }
     }
-    let vn2 = h('div', p2, c2);
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -148,12 +148,12 @@ exports[`attributes object 1`] = `
 exports[`attributes static attributes 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'a';
-    let _2 = 'b';
-    let _3 = 'c';
-    let c4 = [], p4 = {key:4,attrs:{foo: _1,bar: _2,baz: _3}};
-    let vn4 = h('div', p4, c4);
+    var h = this.utils.h;
+    var _1 = 'a';
+    var _2 = 'b';
+    var _3 = 'c';
+    var c4 = [], p4 = {key:4,attrs:{foo: _1,bar: _2,baz: _3}};
+    var vn4 = h('div', p4, c4);
     return vn4;
 }"
 `;
@@ -161,11 +161,11 @@ exports[`attributes static attributes 1`] = `
 exports[`attributes static attributes on void elements 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = '/test.jpg';
-    let _2 = 'Test';
-    let c3 = [], p3 = {key:3,attrs:{src: _1,alt: _2}};
-    let vn3 = h('img', p3, c3);
+    var h = this.utils.h;
+    var _1 = '/test.jpg';
+    var _2 = 'Test';
+    var c3 = [], p3 = {key:3,attrs:{src: _1,alt: _2}};
+    var vn3 = h('img', p3, c3);
     return vn3;
 }"
 `;
@@ -173,10 +173,10 @@ exports[`attributes static attributes on void elements 1`] = `
 exports[`attributes static attributes with dashes 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'Close';
-    let c2 = [], p2 = {key:2,attrs:{\\"aria-label\\": _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = 'Close';
+    var c2 = [], p2 = {key:2,attrs:{\\"aria-label\\": _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -184,12 +184,12 @@ exports[`attributes static attributes with dashes 1`] = `
 exports[`attributes t-att-class and class should combine together 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'hello';
-    let _3 = context['value'];
-    let _2 = 'hello' + (_3 ? ' ' + _3 : '');
-    let c4 = [], p4 = {key:4,attrs:{class: _2}};
-    let vn4 = h('div', p4, c4);
+    var h = this.utils.h;
+    var _1 = 'hello';
+    var _3 = context['value'];
+    var _2 = 'hello' + (_3 ? ' ' + _3 : '');
+    var c4 = [], p4 = {key:4,attrs:{class: _2}};
+    var vn4 = h('div', p4, c4);
     return vn4;
 }"
 `;
@@ -197,12 +197,12 @@ exports[`attributes t-att-class and class should combine together 1`] = `
 exports[`attributes t-att-class with object 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'static';
-    let _3 = this.utils.objectToAttrString({a: context['b'],c: context['d'],e: context['f']});
-    let _2 = 'static' + (_3 ? ' ' + _3 : '');
-    let c4 = [], p4 = {key:4,attrs:{class: _2}};
-    let vn4 = h('div', p4, c4);
+    var h = this.utils.h;
+    var _1 = 'static';
+    var _3 = this.utils.objectToAttrString({a: context['b'],c: context['d'],e: context['f']});
+    var _2 = 'static' + (_3 ? ' ' + _3 : '');
+    var c4 = [], p4 = {key:4,attrs:{class: _2}};
+    var vn4 = h('div', p4, c4);
     return vn4;
 }"
 `;
@@ -210,10 +210,10 @@ exports[`attributes t-att-class with object 1`] = `
 exports[`attributes t-attf-class should combine with class 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'hello ' + \`world\`;
-    let c2 = [], p2 = {key:2,attrs:{class: _1}};
-    let vn2 = h('div', p2, c2);
+    var h = this.utils.h;
+    var _1 = 'hello ' + \`world\`;
+    var c2 = [], p2 = {key:2,attrs:{class: _1}};
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -221,9 +221,9 @@ exports[`attributes t-attf-class should combine with class 1`] = `
 exports[`attributes tuple literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = ['foo', 'bar'];
-    let c2 = [], p2 = {key:2,attrs:{}};
+    var h = this.utils.h;
+    var _1 = ['foo', 'bar'];
+    var c2 = [], p2 = {key:2,attrs:{}};
     if (_1 instanceof Array) {
         p2.attrs[_1[0]] = _1[1];
     } else {
@@ -231,7 +231,7 @@ exports[`attributes tuple literal 1`] = `
             p2.attrs[key] = _1[key];
         }
     }
-    let vn2 = h('div', p2, c2);
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -239,9 +239,9 @@ exports[`attributes tuple literal 1`] = `
 exports[`attributes tuple variable 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = context['value'];
-    let c2 = [], p2 = {key:2,attrs:{}};
+    var h = this.utils.h;
+    var _1 = context['value'];
+    var c2 = [], p2 = {key:2,attrs:{}};
     if (_1 instanceof Array) {
         p2.attrs[_1[0]] = _1[1];
     } else {
@@ -249,7 +249,7 @@ exports[`attributes tuple variable 1`] = `
             p2.attrs[key] = _1[key];
         }
     }
-    let vn2 = h('div', p2, c2);
+    var vn2 = h('div', p2, c2);
     return vn2;
 }"
 `;
@@ -258,14 +258,14 @@ exports[`foreach does not pollute the rendering context 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = [1];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = [1];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.item_first = i === 0;
         context.item_last = i === _3.length - 1;
@@ -273,7 +273,7 @@ exports[`foreach does not pollute the rendering context 1`] = `
         context.item_index = i;
         context.item = _3[i];
         context.item_value = _4[i];
-        let e5 = context['item'];
+        var e5 = context['item'];
         if (e5 || e5 === 0) {
             c1.push({text: e5});
         }
@@ -286,14 +286,14 @@ exports[`foreach iterate on items (on a element node) 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = [1, 2];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = [1, 2];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.item_first = i === 0;
         context.item_last = i === _3.length - 1;
@@ -301,10 +301,10 @@ exports[`foreach iterate on items (on a element node) 1`] = `
         context.item_index = i;
         context.item = _3[i];
         context.item_value = _4[i];
-        let c5 = [], p5 = {key:5};
-        let vn5 = h('span', p5, c5);
+        var c5 = [], p5 = {key:5};
+        var vn5 = h('span', p5, c5);
         c1.push(vn5);
-        let e6 = context['item'];
+        var e6 = context['item'];
         if (e6 || e6 === 0) {
             c5.push({text: e6});
         }
@@ -317,14 +317,14 @@ exports[`foreach iterate on items 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = [3, 2, 1];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = [3, 2, 1];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.item_first = i === 0;
         context.item_last = i === _3.length - 1;
@@ -333,17 +333,17 @@ exports[`foreach iterate on items 1`] = `
         context.item = _3[i];
         context.item_value = _4[i];
         c1.push({text: \` [\`});
-        let e5 = context['item_index'];
+        var e5 = context['item_index'];
         if (e5 || e5 === 0) {
             c1.push({text: e5});
         }
         c1.push({text: \`: \`});
-        let e6 = context['item'];
+        var e6 = context['item'];
         if (e6 || e6 === 0) {
             c1.push({text: e6});
         }
         c1.push({text: \` \`});
-        let e7 = context['item_value'];
+        var e7 = context['item_value'];
         if (e7 || e7 === 0) {
             c1.push({text: e7});
         }
@@ -357,14 +357,14 @@ exports[`foreach iterate, dict param 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = context['value'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = context['value'];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.item_first = i === 0;
         context.item_last = i === _3.length - 1;
@@ -373,22 +373,22 @@ exports[`foreach iterate, dict param 1`] = `
         context.item = _3[i];
         context.item_value = _4[i];
         c1.push({text: \` [\`});
-        let e5 = context['item_index'];
+        var e5 = context['item_index'];
         if (e5 || e5 === 0) {
             c1.push({text: e5});
         }
         c1.push({text: \`: \`});
-        let e6 = context['item'];
+        var e6 = context['item'];
         if (e6 || e6 === 0) {
             c1.push({text: e6});
         }
         c1.push({text: \` \`});
-        let e7 = context['item_value'];
+        var e7 = context['item_value'];
         if (e7 || e7 === 0) {
             c1.push({text: e7});
         }
         c1.push({text: \` - \`});
-        let e8 = context['item_parity'];
+        var e8 = context['item_parity'];
         if (e8 || e8 === 0) {
             c1.push({text: e8});
         }
@@ -402,14 +402,14 @@ exports[`foreach iterate, integer param 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = 3;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = 3;
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.item_first = i === 0;
         context.item_last = i === _3.length - 1;
@@ -418,17 +418,17 @@ exports[`foreach iterate, integer param 1`] = `
         context.item = _3[i];
         context.item_value = _4[i];
         c1.push({text: \` [\`});
-        let e5 = context['item_index'];
+        var e5 = context['item_index'];
         if (e5 || e5 === 0) {
             c1.push({text: e5});
         }
         c1.push({text: \`: \`});
-        let e6 = context['item'];
+        var e6 = context['item'];
         if (e6 || e6 === 0) {
             c1.push({text: e6});
         }
         c1.push({text: \` \`});
-        let e7 = context['item_value'];
+        var e7 = context['item_value'];
         if (e7 || e7 === 0) {
             c1.push({text: e7});
         }
@@ -442,14 +442,14 @@ exports[`foreach iterate, position 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = 5;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = 5;
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.elem_first = i === 0;
         context.elem_last = i === _3.length - 1;
@@ -465,7 +465,7 @@ exports[`foreach iterate, position 1`] = `
             c1.push({text: \` last\`});
         }
         c1.push({text: \` (\`});
-        let e5 = context['elem_parity'];
+        var e5 = context['elem_parity'];
         if (e5 || e5 === 0) {
             c1.push({text: e5});
         }
@@ -478,9 +478,9 @@ exports[`foreach iterate, position 1`] = `
 exports[`loading templates can initialize qweb with a string 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`jupiler\`});
     return vn1;
 }"
@@ -489,15 +489,15 @@ exports[`loading templates can initialize qweb with a string 1`] = `
 exports[`loading templates can load a few templates from a xml string 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('ul', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('li', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('ul', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('li', p2, c2);
     c1.push(vn2);
     c2.push({text: \`ok\`});
-    let c3 = [], p3 = {key:3};
-    let vn3 = h('li', p3, c3);
+    var c3 = [], p3 = {key:3};
+    var vn3 = h('li', p3, c3);
     c1.push(vn3);
     c3.push({text: \`foo\`});
     return vn1;
@@ -508,14 +508,14 @@ exports[`misc global 1`] = `
 "function anonymous(context,extra
 ) {
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = [4,5,6];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = [4,5,6];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.value_first = i === 0;
         context.value_last = i === _3.length - 1;
@@ -523,55 +523,55 @@ exports[`misc global 1`] = `
         context.value_index = i;
         context.value = _3[i];
         context.value_value = _4[i];
-        let c5 = [], p5 = {key:5,on:{}};
-        let vn5 = h('span', p5, c5);
+        var c5 = [], p5 = {key:5,on:{}};
+        var vn5 = h('span', p5, c5);
         c1.push(vn5);
-        let e6 = context['value'];
+        var e6 = context['value'];
         if (e6 || e6 === 0) {
             c5.push({text: e6});
         }
-        let _7 = 'agüero';
-        let c8 = [], p8 = {key:8,attrs:{\\"falló\\": _7},on:{}};
-        let vn8 = h('Año', p8, c8);
+        var _7 = 'agüero';
+        var c8 = [], p8 = {key:8,attrs:{\\"falló\\": _7},on:{}};
+        var vn8 = h('Año', p8, c8);
         c1.push(vn8);
-        let c9 = [], p9 = {key:9,on:{}};
-        let vn9 = h('span', p9, c9);
+        var c9 = [], p9 = {key:9,on:{}};
+        var vn9 = h('span', p9, c9);
         c8.push(vn9);
-        let e10 = 'aaa';
+        var e10 = 'aaa';
         if (e10 || e10 === 0) {
             c9.push({text: e10});
         } else {
             c9.push({text: \`foo default\`});
         }
-        let c11 = [], p11 = {key:11,on:{}};
-        let vn11 = h('span', p11, c11);
+        var c11 = [], p11 = {key:11,on:{}};
+        var vn11 = h('span', p11, c11);
         c8.push(vn11);
-        let e12 = context['foo'];
+        var e12 = context['foo'];
         if (e12 || e12 === 0) {
             c11.push({text: e12});
         } else {
             c11.push({text: \`foo default\`});
         }
-        let c13 = [], p13 = {key:13,on:{}};
-        let vn13 = h('span', p13, c13);
+        var c13 = [], p13 = {key:13,on:{}};
+        var vn13 = h('span', p13, c13);
         c8.push(vn13);
-        let e14 = 'bbb';
+        var e14 = 'bbb';
         if (e14 || e14 === 0) {
             c13.push({text: e14});
         } else {
             c13.push({text: \`foo default\`});
         }
     }
-    let c15 = [], p15 = {key:15,on:{}};
-    let vn15 = h('div', p15, c15);
+    var c15 = [], p15 = {key:15,on:{}};
+    var vn15 = h('div', p15, c15);
     c1.push(vn15);
-    let e16 = context['toto'];
+    var e16 = context['toto'];
     if (e16 || e16 === 0) {
-        let frag17 = this.utils.getFragment(e16)
-        let p18 = {hook: {
+        var frag17 = this.utils.getFragment(e16)
+        var p18 = {hook: {
           insert: n => n.elm.parentNode.replaceChild(frag17, n.elm),
         }};
-        let vn18 = h('div', p18)
+        var vn18 = h('div', p18)
         c15.push(vn18);
     } else {
         c15.push({text: \`toto default\`});
@@ -583,11 +583,11 @@ exports[`misc global 1`] = `
 exports[`special cases for some boolean html attributes/properties input type= checkbox, with t-att-checked 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let _1 = 'checkbox';
-    let _2 = context['flag'];
-    let c3 = [], p3 = {key:3,attrs:{type: _1,checked: _2},props:{checked: _2}};
-    let vn3 = h('input', p3, c3);
+    var h = this.utils.h;
+    var _1 = 'checkbox';
+    var _2 = context['flag'];
+    var c3 = [], p3 = {key:3,attrs:{type: _1,checked: _2},props:{checked: _2}};
+    var vn3 = h('input', p3, c3);
     return vn3;
 }"
 `;
@@ -595,38 +595,38 @@ exports[`special cases for some boolean html attributes/properties input type= c
 exports[`special cases for some boolean html attributes/properties various boolean html attributes 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let _2 = 'checkbox';
-    let _3 = 'checked';
-    let c4 = [], p4 = {key:4,attrs:{type: _2,checked: _3},props:{checked: _3}};
-    let vn4 = h('input', p4, c4);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var _2 = 'checkbox';
+    var _3 = 'checked';
+    var c4 = [], p4 = {key:4,attrs:{type: _2,checked: _3},props:{checked: _3}};
+    var vn4 = h('input', p4, c4);
     c1.push(vn4);
-    let _5 = 'checked';
-    let c6 = [], p6 = {key:6,attrs:{checked: _5}};
-    let vn6 = h('input', p6, c6);
+    var _5 = 'checked';
+    var c6 = [], p6 = {key:6,attrs:{checked: _5}};
+    var vn6 = h('input', p6, c6);
     c1.push(vn6);
-    let _7 = 'checked';
-    let c8 = [], p8 = {key:8,attrs:{checked: _7}};
-    let vn8 = h('div', p8, c8);
+    var _7 = 'checked';
+    var c8 = [], p8 = {key:8,attrs:{checked: _7}};
+    var vn8 = h('div', p8, c8);
     c1.push(vn8);
-    let _9 = 'selected';
-    let c10 = [], p10 = {key:10,attrs:{selected: _9}};
-    let vn10 = h('div', p10, c10);
+    var _9 = 'selected';
+    var c10 = [], p10 = {key:10,attrs:{selected: _9}};
+    var vn10 = h('div', p10, c10);
     c1.push(vn10);
-    let _11 = 'selected';
-    let _12 = '1';
-    let c13 = [], p13 = {key:13,attrs:{selected: _11,other: _12},props:{selected: _11}};
-    let vn13 = h('option', p13, c13);
+    var _11 = 'selected';
+    var _12 = '1';
+    var c13 = [], p13 = {key:13,attrs:{selected: _11,other: _12},props:{selected: _11}};
+    var vn13 = h('option', p13, c13);
     c1.push(vn13);
-    let _14 = 'readonly';
-    let c15 = [], p15 = {key:15,attrs:{readonly: _14},props:{readonly: _14}};
-    let vn15 = h('input', p15, c15);
+    var _14 = 'readonly';
+    var c15 = [], p15 = {key:15,attrs:{readonly: _14},props:{readonly: _14}};
+    var vn15 = h('input', p15, c15);
     c1.push(vn15);
-    let _16 = 'disabled';
-    let c17 = [], p17 = {key:17,attrs:{disabled: _16},props:{disabled: _16}};
-    let vn17 = h('button', p17, c17);
+    var _16 = 'disabled';
+    var c17 = [], p17 = {key:17,attrs:{disabled: _16},props:{disabled: _16}};
+    var vn17 = h('button', p17, c17);
     c1.push(vn17);
     return vn1;
 }"
@@ -635,11 +635,11 @@ exports[`special cases for some boolean html attributes/properties various boole
 exports[`static templates div with a span child node 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     c2.push({text: \`word\`});
     return vn1;
@@ -649,9 +649,9 @@ exports[`static templates div with a span child node 1`] = `
 exports[`static templates div with a text node 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`word\`});
     return vn1;
 }"
@@ -660,9 +660,9 @@ exports[`static templates div with a text node 1`] = `
 exports[`static templates empty div 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     return vn1;
 }"
 `;
@@ -670,8 +670,8 @@ exports[`static templates empty div 1`] = `
 exports[`static templates simple string 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let vn1 = {text: \`hello vdom\`};
+    var h = this.utils.h;
+    var vn1 = {text: \`hello vdom\`};
     return vn1;
 }"
 `;
@@ -679,9 +679,9 @@ exports[`static templates simple string 1`] = `
 exports[`t-call (template calling basic caller 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`ok\`});
     return vn1;
 }"
@@ -690,10 +690,10 @@ exports[`t-call (template calling basic caller 1`] = `
 exports[`t-call (template calling inherit context 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = 1;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = 1;
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -704,11 +704,11 @@ exports[`t-call (template calling inherit context 1`] = `
 exports[`t-call (template calling scoped parameters 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`ok\`});
-    let e2 = context['foo'];
+    var e2 = context['foo'];
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -719,9 +719,9 @@ exports[`t-call (template calling scoped parameters 1`] = `
 exports[`t-call (template calling with unused body 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`ok\`});
     return vn1;
 }"
@@ -730,9 +730,9 @@ exports[`t-call (template calling with unused body 1`] = `
 exports[`t-call (template calling with unused setbody 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \`ok\`});
     return vn1;
 }"
@@ -741,9 +741,9 @@ exports[`t-call (template calling with unused setbody 1`] = `
 exports[`t-call (template calling with used body 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('h1', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('h1', p1, c1);
     c1.push({text: \`ok\`});
     return vn1;
 }"
@@ -752,10 +752,10 @@ exports[`t-call (template calling with used body 1`] = `
 exports[`t-call (template calling with used set body 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -766,10 +766,10 @@ exports[`t-call (template calling with used set body 1`] = `
 exports[`t-esc escaping on a node 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('span', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('span', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -780,10 +780,10 @@ exports[`t-esc escaping on a node 1`] = `
 exports[`t-esc escaping on a node with a body 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('span', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('span', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     } else {
@@ -796,10 +796,10 @@ exports[`t-esc escaping on a node with a body 1`] = `
 exports[`t-esc escaping on a node with a body, as a default 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('span', p1, c1);
-    let e2 = context['var'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('span', p1, c1);
+    var e2 = context['var'];
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     } else {
@@ -812,10 +812,10 @@ exports[`t-esc escaping on a node with a body, as a default 1`] = `
 exports[`t-esc literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -826,10 +826,10 @@ exports[`t-esc literal 1`] = `
 exports[`t-esc variable 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let e2 = context['var'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var e2 = context['var'];
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -840,9 +840,9 @@ exports[`t-esc variable 1`] = `
 exports[`t-if boolean value condition elif 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     if (context['color'] == 'black') {
         c1.push({text: \`black pearl\`});
     }
@@ -862,11 +862,11 @@ exports[`t-if boolean value condition elif 1`] = `
 exports[`t-if boolean value condition else 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     c2.push({text: \`begin\`});
     if (context['condition']) {
@@ -875,8 +875,8 @@ exports[`t-if boolean value condition else 1`] = `
     else {
         c1.push({text: \`ok-else\`});
     }
-    let c3 = [], p3 = {key:3};
-    let vn3 = h('span', p3, c3);
+    var c3 = [], p3 = {key:3};
+    var vn3 = h('span', p3, c3);
     c1.push(vn3);
     c3.push({text: \`end\`});
     return vn1;
@@ -886,11 +886,11 @@ exports[`t-if boolean value condition else 1`] = `
 exports[`t-if boolean value condition false else 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     c2.push({text: \`begin\`});
     if (context['condition']) {
@@ -899,8 +899,8 @@ exports[`t-if boolean value condition false else 1`] = `
     else {
         c1.push({text: \`fail-else\`});
     }
-    let c3 = [], p3 = {key:3};
-    let vn3 = h('span', p3, c3);
+    var c3 = [], p3 = {key:3};
+    var vn3 = h('span', p3, c3);
     c1.push(vn3);
     c3.push({text: \`end\`});
     return vn1;
@@ -910,9 +910,9 @@ exports[`t-if boolean value condition false else 1`] = `
 exports[`t-if boolean value condition missing 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
     if (context['condition']) {
         c1.push({text: \`fail\`});
     }
@@ -923,9 +923,9 @@ exports[`t-if boolean value condition missing 1`] = `
 exports[`t-if boolean value false condition 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     if (context['condition']) {
         c1.push({text: \`ok\`});
     }
@@ -936,9 +936,9 @@ exports[`t-if boolean value false condition 1`] = `
 exports[`t-if boolean value true condition 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     if (context['condition']) {
         c1.push({text: \`ok\`});
     }
@@ -949,9 +949,9 @@ exports[`t-if boolean value true condition 1`] = `
 exports[`t-if can use some boolean operators in expressions 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     if (context['cond1'] && context['cond2']) {
         c1.push({text: \`and\`});
     }
@@ -984,9 +984,9 @@ exports[`t-on can bind event handler 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     extra.handlers['click' + 1] = extra.handlers['click' + 1] || (context['add'] || (function () {throw new Error('Missing handler \\\\'' + 'add' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner);
     p1.on['click'] = extra.handlers['click' + 1];
     c1.push({text: \`Click\`});
@@ -998,9 +998,9 @@ exports[`t-on can bind handlers with arguments 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     p1.on['click'] = (context['add'] || (function () {throw new Error('Missing handler \\\\'' + 'add' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner, 5);
     c1.push({text: \`Click\`});
     return vn1;
@@ -1011,9 +1011,9 @@ exports[`t-on can bind handlers with empty object (with non empty inner string 1
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     p1.on['click'] = (context['doSomething'] || (function () {throw new Error('Missing handler \\\\'' + 'doSomething' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner, {});
     c1.push({text: \`Click\`});
     return vn1;
@@ -1024,9 +1024,9 @@ exports[`t-on can bind handlers with empty object 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     p1.on['click'] = (context['doSomething'] || (function () {throw new Error('Missing handler \\\\'' + 'doSomething' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner, {});
     c1.push({text: \`Click\`});
     return vn1;
@@ -1038,14 +1038,14 @@ exports[`t-on can bind handlers with loop variable as argument 1`] = `
 ) {
     let owner = context;
     context = Object.create(context);
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('ul', p1, c1);
-    let _2 = ['someval'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('ul', p1, c1);
+    var _2 = ['someval'];
     if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
     if (typeof _2 === 'number') { _2 = Array.from(Array(_2).keys())}
-    let _3 = _2 instanceof Array ? _2 : Object.keys(_2);
-    let _4 = _2 instanceof Array ? _2 : Object.values(_2);
+    var _3 = _2 instanceof Array ? _2 : Object.keys(_2);
+    var _4 = _2 instanceof Array ? _2 : Object.values(_2);
     for (let i = 0; i < _3.length; i++) {
         context.action_first = i === 0;
         context.action_last = i === _3.length - 1;
@@ -1053,11 +1053,11 @@ exports[`t-on can bind handlers with loop variable as argument 1`] = `
         context.action_index = i;
         context.action = _3[i];
         context.action_value = _4[i];
-        let c5 = [], p5 = {key:5};
-        let vn5 = h('li', p5, c5);
+        var c5 = [], p5 = {key:5};
+        var vn5 = h('li', p5, c5);
         c1.push(vn5);
-        let c6 = [], p6 = {key:6,on:{}};
-        let vn6 = h('a', p6, c6);
+        var c6 = [], p6 = {key:6,on:{}};
+        var vn6 = h('a', p6, c6);
         c5.push(vn6);
         p6.on['click'] = (context['activate'] || (function () {throw new Error('Missing handler \\\\'' + 'activate' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner, context['action']);
         c6.push({text: \`link\`});
@@ -1070,9 +1070,9 @@ exports[`t-on can bind handlers with object arguments 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     p1.on['click'] = (context['add'] || (function () {throw new Error('Missing handler \\\\'' + 'add' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner, {val: 5});
     c1.push({text: \`Click\`});
     return vn1;
@@ -1083,9 +1083,9 @@ exports[`t-on can bind two event handlers 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     extra.handlers['click' + 1] = extra.handlers['click' + 1] || (context['handleClick'] || (function () {throw new Error('Missing handler \\\\'' + 'handleClick' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner);
     p1.on['click'] = extra.handlers['click' + 1];
     extra.handlers['dblclick' + 1] = extra.handlers['dblclick' + 1] || (context['handleDblClick'] || (function () {throw new Error('Missing handler \\\\'' + 'handleDblClick' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner);
@@ -1099,9 +1099,9 @@ exports[`t-on handler is bound to proper owner 1`] = `
 "function anonymous(context,extra
 ) {
     let owner = context;
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1,on:{}};
-    let vn1 = h('button', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1,on:{}};
+    var vn1 = h('button', p1, c1);
     extra.handlers['click' + 1] = extra.handlers['click' + 1] || (context['add'] || (function () {throw new Error('Missing handler \\\\'' + 'add' + \`\\\\' when evaluating template 'test'\`)})()).bind(owner);
     p1.on['click'] = extra.handlers['click' + 1];
     c1.push({text: \`Click\`});
@@ -1112,16 +1112,16 @@ exports[`t-on handler is bound to proper owner 1`] = `
 exports[`t-raw literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
-        let frag3 = this.utils.getFragment(e2)
-        let p4 = {hook: {
+        var frag3 = this.utils.getFragment(e2)
+        var p4 = {hook: {
           insert: n => n.elm.parentNode.replaceChild(frag3, n.elm),
         }};
-        let vn4 = h('div', p4)
+        var vn4 = h('div', p4)
         c1.push(vn4);
     }
     return vn1;
@@ -1131,16 +1131,16 @@ exports[`t-raw literal 1`] = `
 exports[`t-raw not escaping 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = context['var'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = context['var'];
     if (e2 || e2 === 0) {
-        let frag3 = this.utils.getFragment(e2)
-        let p4 = {hook: {
+        var frag3 = this.utils.getFragment(e2)
+        var p4 = {hook: {
           insert: n => n.elm.parentNode.replaceChild(frag3, n.elm),
         }};
-        let vn4 = h('div', p4)
+        var vn4 = h('div', p4)
         c1.push(vn4);
     }
     return vn1;
@@ -1150,20 +1150,20 @@ exports[`t-raw not escaping 1`] = `
 exports[`t-raw t-raw and another sibling node 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     c2.push({text: \`hello\`});
-    let e3 = context['var'];
+    var e3 = context['var'];
     if (e3 || e3 === 0) {
-        let frag4 = this.utils.getFragment(e3)
-        let p5 = {hook: {
+        var frag4 = this.utils.getFragment(e3)
+        var p5 = {hook: {
           insert: n => n.elm.parentNode.replaceChild(frag4, n.elm),
         }};
-        let vn5 = h('div', p5)
+        var vn5 = h('div', p5)
         c1.push(vn5);
     }
     return vn1;
@@ -1173,16 +1173,16 @@ exports[`t-raw t-raw and another sibling node 1`] = `
 exports[`t-raw variable 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('span', p1, c1);
-    let e2 = context['var'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('span', p1, c1);
+    var e2 = context['var'];
     if (e2 || e2 === 0) {
-        let frag3 = this.utils.getFragment(e2)
-        let p4 = {hook: {
+        var frag3 = this.utils.getFragment(e2)
+        var p4 = {hook: {
           insert: n => n.elm.parentNode.replaceChild(frag3, n.elm),
         }};
-        let vn4 = h('div', p4)
+        var vn4 = h('div', p4)
         c1.push(vn4);
     }
     return vn1;
@@ -1192,11 +1192,11 @@ exports[`t-raw variable 1`] = `
 exports[`t-ref can get a ref on a node 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     p2.hook = {
             create: (_, n) => context.refs['myspan'] = n.elm,
@@ -1208,10 +1208,10 @@ exports[`t-ref can get a ref on a node 1`] = `
 exports[`t-set evaluate value expression 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = 1 + 2;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = 1 + 2;
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1222,10 +1222,10 @@ exports[`t-set evaluate value expression 1`] = `
 exports[`t-set evaluate value expression, part 2 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = context['somevariable'] + 2;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = context['somevariable'] + 2;
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1236,10 +1236,10 @@ exports[`t-set evaluate value expression, part 2 1`] = `
 exports[`t-set set from attribute literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = 'ok';
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = 'ok';
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1250,10 +1250,10 @@ exports[`t-set set from attribute literal 1`] = `
 exports[`t-set set from attribute lookup 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = context['value'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = context['value'];
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1264,8 +1264,8 @@ exports[`t-set set from attribute lookup 1`] = `
 exports[`t-set set from body literal 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let vn1 = {text: \`ok\`};
+    var h = this.utils.h;
+    var vn1 = {text: \`ok\`};
     return vn1;
 }"
 `;
@@ -1273,10 +1273,10 @@ exports[`t-set set from body literal 1`] = `
 exports[`t-set set from body lookup 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = context['value'];
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = context['value'];
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1287,9 +1287,9 @@ exports[`t-set set from body lookup 1`] = `
 exports[`t-set set from empty body 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     return vn1;
 }"
 `;
@@ -1297,10 +1297,10 @@ exports[`t-set set from empty body 1`] = `
 exports[`t-set value priority 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let e2 = 1;
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var e2 = 1;
     if (e2 || e2 === 0) {
         c1.push({text: e2});
     }
@@ -1311,9 +1311,9 @@ exports[`t-set value priority 1`] = `
 exports[`whitespace handling consecutives whitespaces are condensed into a single space 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \` abc \`});
     return vn1;
 }"
@@ -1322,9 +1322,9 @@ exports[`whitespace handling consecutives whitespaces are condensed into a singl
 exports[`whitespace handling nothing is done in pre tags 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('pre', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('pre', p1, c1);
     c1.push({text: \`  \`});
     return vn1;
 }"
@@ -1333,9 +1333,9 @@ exports[`whitespace handling nothing is done in pre tags 1`] = `
 exports[`whitespace handling nothing is done in pre tags 2`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('pre', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('pre', p1, c1);
     c1.push({text: \`
         some text
       \`});
@@ -1346,9 +1346,9 @@ exports[`whitespace handling nothing is done in pre tags 2`] = `
 exports[`whitespace handling nothing is done in pre tags 3`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('pre', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('pre', p1, c1);
     c1.push({text: \`
         
       \`});
@@ -1359,9 +1359,9 @@ exports[`whitespace handling nothing is done in pre tags 3`] = `
 exports[`whitespace handling white space only text nodes are condensed into a single space 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
     c1.push({text: \` \`});
     return vn1;
 }"
@@ -1370,11 +1370,11 @@ exports[`whitespace handling white space only text nodes are condensed into a si
 exports[`whitespace handling whitespace only text nodes with newlines are removed 1`] = `
 "function anonymous(context,extra
 ) {
-    let h = this.utils.h;
-    let c1 = [], p1 = {key:1};
-    let vn1 = h('div', p1, c1);
-    let c2 = [], p2 = {key:2};
-    let vn2 = h('span', p2, c2);
+    var h = this.utils.h;
+    var c1 = [], p1 = {key:1};
+    var vn1 = h('div', p1, c1);
+    var c2 = [], p2 = {key:2};
+    var vn2 = h('span', p2, c2);
     c1.push(vn2);
     c2.push({text: \`abc\`});
     return vn1;