Error Reference Hub
NV1001Compiler
Unknown Identifier
The compiler encountered an identifier, variable, or function name that has not been declared or is not in scope.
Why this error occurs
This happens when a variable or function is referenced before its declaration, when a name is misspelled, when a variable was declared in an inner scope, or when an imported symbol is missing.
Incorrect Code
// incorrect: 'calculate_tax' is referenced before declaration or misspelled
let total = calculate_tax(100.0)
fn calc_tax(amount):
return amount * 0.08Corrected Code
// corrected: define function or variable before using it
fn calc_tax(amount):
return amount * 0.08
let total = calc_tax(100.0)
print(total)Troubleshooting & Remediation
- 1Check spelling and casing of the variable or function name.
- 2Ensure the variable is declared before the line where it is referenced.
- 3Verify that the identifier was exported from the imported module.
- 4Check block scope boundaries (variables defined in 'if' or 'for' blocks are not accessible outside).
Relevant CLI Commands
$ nextviper check$ nextviper check --format=json