Throw on unsupported features of {%}

bcomnes · May 14, 2024 · f5b8e98 · f5b8e98
1 parent 3dfb9c6
commit f5b8e98
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -20,7 +20,7 @@ const runTasks = require('./run-tasks')
 // ------------------------------------------------------------------------------
 
 const ARGS_PATTERN = /\{(!)?([*@%]|\d+)([^}]+)?}/g
-const ARGS_UNPACK_PATTERN = /\{(!)?(%)([^}]+)?}/g
+const ARGS_UNPACK_PATTERN = /\{(!)?([%])([^}]+)?}/g
 
 /**
  * Converts a given value to an array.
@@ -52,7 +52,12 @@ function applyArguments (patterns, args) {
         const result = []
         for (let i = 0, length = args.length; i < length; i++) {
           const argPosition = i + 1
-          result.push(pattern.replace(ARGS_UNPACK_PATTERN, () => `{${argPosition}}`))
+          result.push(pattern.replace(ARGS_UNPACK_PATTERN, (whole, indirectionMark, id, options) => {
+            if (indirectionMark != null || options != null || id !== '%') {
+              throw Error(`Invalid Placeholder: ${whole}`)
+            }
+            return `{${argPosition}}`
+          }))
         }
         return result
       }