# Errors ## Yarn Spinner Error Codes ### Errors | Code | Message | | ------ | ------------------------------------------------------------------------------------------------------------------------------------------- | | YS0001 | Variable has conflicting implicit type declarations. A variable is being used as different types in different places. | | YS0002 | Type mismatch. An expression's type doesn't match what's expected (e.g. assigning a number to a boolean). | | YS0004 | Missing node delimiter. A node is missing its `===` closing delimiter. | | YS0005 | Syntax error. Something in the script can't be parsed. | | YS0006 | Unclosed command. A `<<` was opened but never closed with `>>`. | | YS0007 | Unclosed scope. A control flow block (like `<>`) isn't properly closed (missing `<>`). | | YS0011 | Duplicate node title. Two or more nodes have the same title without `when:` clauses to distinguish them. | | YS0012 | Jump to undefined node. A `<>` or `<>` targets a node that doesn't exist. | | YS0013 | Invalid function call. A function is called with the wrong number or type of parameters, or doesn't exist. | | YS0014 | Invalid or unknown command. A command isn't recognised. Check spelling or make sure it's defined in your definitions file. | | YS0017 | Line has both `#line` and `#shadow` tags. A line can't be both — shadow lines don't get their own line ID. | | YS0018 | Duplicate line ID. Every `#line:` tag in a project must be unique. | | YS0021 | Stray `>>` without a matching `<<`. | | YS0022 | Command keyword outside of `<<` and `>>`. Did you forget the angle brackets? | | YS0025 | Unknown enum member. The value isn't a known member of the expected enum type. | | YS0023 | Wrong enum type. The value is from a different enum than what the parameter expects. | | YS0024 | Enum type expected. The parameter expects an enum value but got something else. | | YS0026 | Enum format error. Enum values should be written as `EnumName.Value`. | | YS0027 | Invalid node name. Node titles can only contain letters, numbers, and underscores. | | YS0028 | Can't infer variable type. Declare the variable explicitly with `<>`. | | YS0029 | Can't determine expression type. The compiler can't figure out what type this expression evaluates to. | | YS0030 | Can't modify a smart variable. Smart variables are computed values and are read-only. | | YS0031 | Missing `when:` clause in node group. If some nodes in a group have `when:` clauses, all must have them (use `when: always` as a fallback). | | YS0032 | Duplicate subtitle in node group. Subtitles within a node group must be unique. | | YS0034 | Incompatible function. A library function has a signature that can't be used in Yarn scripts. | | YS0035 | Enum declaration error. | | YS0036 | Feature requires newer project version. A language feature was used that needs a higher `projectFileVersion`. | | YS0037 | Invalid literal value. A constant value couldn't be parsed. | | YS0038 | Unresolved type member. A type member access (like `Enum.Value`) couldn't be resolved. | | YS0039 | Variable redeclaration. A variable can only be declared once. | | YS0040 | Type redeclaration. A type with this name already exists. | | YS0041 | Internal compiler error. Something unexpected happened. Please file an issue. | | YS0042 | Unknown line ID for shadow line. The `#shadow:` tag references a line ID that doesn't exist. | | YS0043 | Shadow lines can't have expressions. Shadow lines must be plain text. | | YS0044 | Shadow line text mismatch. A shadow line must have the same text as its source line. | | YS0045 | Smart variable reference loop. A smart variable's expression references itself through other smart variables. | | YS0046 | Null default value. Variable declarations must have a non-null default value. | | YS0047 | Expression took too long to resolve. Try simplifying this expression. | ### Warnings | Code | Message | | ------ | ----------------------------------------------------------------------------------------------------------------------- | | YS0003 | Undeclared variable. A variable is used without being declared. Add a `<>` statement. | | YS0008 | Unreachable code. Code that will never be executed. | | YS0015 | Cyclic node dependency. Nodes reference each other in a loop, which may cause infinite loops. | | YS0016 | Unknown character. A character name isn't defined in the project. Add it to your `.yarnproject` file's characters list. | ### Info | Code | Message | | ------ | ---------------------------------------------------------------- | | YS0010 | Unused variable. A variable is declared but never used anywhere. | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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