AUR0156
Error Message
AUR0156: Expression error: unconsumed token: "{{token}}" at position {{position}} of "{{expression}}"
Where:
{{token}}
is the leftover token that couldn't be parsed{{position}}
is the character position in the expression{{expression}}
is the full binding expression
Description
This error occurs when the expression parser successfully parses part of an expression but encounters additional tokens that don't form a valid continuation of the expression. Essentially, there are "leftover" tokens that the parser doesn't know how to handle.
Common Scenarios
Multiple Statements
<!-- ❌ Wrong: Multiple statements not allowed -->
<div textcontent.bind="value = 5; result = 10"></div>
<div click.trigger="doSomething(); doOther()"></div>
Invalid Syntax Combinations
<!-- ❌ Wrong: Invalid token combinations -->
<div textcontent.bind="user name"></div> <!-- Missing operator -->
<div textcontent.bind="value 5"></div> <!-- Missing operator -->
<div textcontent.bind="item.prop extra"></div> <!-- Unexpected token -->
Misplaced Operators
<!-- ❌ Wrong: Operators in wrong positions -->
<div textcontent.bind="value + + 5"></div>
<div textcontent.bind="user. .name"></div>
<div textcontent.bind="result &&"></div>
Incomplete Expressions
<!-- ❌ Wrong: Incomplete expressions with trailing tokens -->
<div textcontent.bind="getValue() extra"></div>
<div textcontent.bind="condition ? result"></div> <!-- Missing : else part -->
Solutions
1. Fix Multiple Statements
<!-- ✅ Correct: Single expressions only -->
<div textcontent.bind="getValue()"></div>
<div click.trigger="doSomething()"></div>
<!-- ✅ Correct: Use methods for complex logic -->
<div click.trigger="handleMultipleActions()"></div>
export class MyComponent {
handleMultipleActions() {
this.doSomething();
this.doOther();
}
}
2. Add Missing Operators
<!-- ✅ Correct: Proper operators -->
<div textcontent.bind="user + ' ' + name"></div>
<div textcontent.bind="value * 5"></div>
<div textcontent.bind="item.prop.extraProp"></div>
3. Fix Operator Placement
<!-- ✅ Correct: Proper operator usage -->
<div textcontent.bind="value + 5"></div>
<div textcontent.bind="user.name"></div>
<div textcontent.bind="result && condition"></div>
4. Complete Expressions
<!-- ✅ Correct: Complete ternary expressions -->
<div textcontent.bind="condition ? result : alternative"></div>
<div textcontent.bind="getValue()"></div>
<div class.bind="isActive ? 'active' : 'inactive'"></div>
Example: Common Fixes
<!-- Template with unconsumed token errors -->
<template>
<!-- ❌ Problems -->
<div textcontent.bind="first second"></div>
<div textcontent.bind="value +"></div>
<div textcontent.bind="user name age"></div>
<div click.trigger="save(); close()"></div>
<!-- ✅ Fixed -->
<div textcontent.bind="first + ' ' + second"></div>
<div textcontent.bind="value + defaultValue"></div>
<div textcontent.bind="user.name + ' (' + user.age + ')'"></div>
<div click.trigger="saveAndClose()"></div>
</template>
export class MyComponent {
first = 'John';
second = 'Doe';
value = 10;
defaultValue = 0;
user = { name: 'Jane', age: 30 };
saveAndClose() {
this.save();
this.close();
}
save() {
// Save logic
}
close() {
// Close logic
}
}
Debugging Tips
Check Expression Syntax: Look for missing operators between values
Verify Completeness: Ensure expressions are complete (e.g., ternary operators have both branches)
Split Complex Logic: Move complex multi-step logic to component methods
Use Console: Test expression parts in browser console to identify issues
Check Position: The error shows exactly where the unconsumed token starts
Related Errors
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