Silently ignore non-iterables in {#each}

scripts/odf/fillOdtTemplate.js

@@ -30,7 +30,7 @@ const ODTMimetype = 'application/vnd.oasis.opendocument.text'
  * @param {any} context - data / global object
  * @return {any}
  */
-function evaludateTemplateExpression(expression, context){
+function evaluateTemplateExpression(expression, context){
     const parts = expression.trim().split('.')
 
     let value = context;
@@ -76,7 +76,7 @@ function findPlacesToFillInString(str) {
             parts.push(fixedPart)
 
         
-        parts.push(data => evaludateTemplateExpression(expression, data))
+        parts.push(data => evaluateTemplateExpression(expression, data))
 
         remaining = newRemaining
     }
@@ -189,12 +189,10 @@ function fillEachBlock(startNode, iterableExpression, itemExpression, endNode, d
 
     // Find the iterable in the data
     // PPP eventually, evaluate the expression as a JS expression
-    const iterable = evaludateTemplateExpression(iterableExpression, data)
-    if(!iterable){
-        throw new TypeError(`Missing iterable (${iterableExpression})`)
-    }
-    if(typeof iterable[Symbol.iterator] !== 'function'){
-        throw new TypeError(`'${iterableExpression}' is not iterable`)
+    let iterable = evaluateTemplateExpression(iterableExpression, data)
+    if(!iterable || typeof iterable[Symbol.iterator] !== 'function'){
+        // when there is no iterable, silently replace with empty array
+        iterable = []
     }
 
     // create each loop result

tests/fill-odt-template.js

@@ -71,6 +71,35 @@ Pâtes à lasagne (fraîches !)
 `)
 
 
+});
+
+test('Filling with {#each} and non-iterable value results in no error and empty result', async t => {
+    const templatePath = join(import.meta.dirname, './data/enum-courses.odt')
+    const templateContent = `🧺 La liste de courses incroyable 🧺
+
+{#each listeCourses as élément}
+{élément}
+{/each}
+`
+
+	const data = {
+        listeCourses : undefined
+    }
+
+    const odtTemplate = await getOdtTemplate(templatePath)
+
+    const templateTextContent = await getOdtTextContent(odtTemplate)
+
+    t.deepEqual(templateTextContent, templateContent, 'reconnaissance du template')
+
+    const odtResult = await fillOdtTemplate(odtTemplate, data)
+
+    const odtResultTextContent = await getOdtTextContent(odtResult)
+    t.deepEqual(odtResultTextContent, `🧺 La liste de courses incroyable 🧺
+
+`)
+
+
 });