Port "Fixed a JSDoc-related crash when obtaining type of a type literal type argument" #1039
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…al type argument"
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Pull Request Overview
Ports the fix from the TypeScript repo to prevent a JSDoc-related crash when obtaining the type of a type literal type argument by adding a nil check and caching the symbol before use.
- Introduce a local
symvariable to storenode.Symbol() - Add
sym == nilcheck in the condition to avoid dereferencingnil
| @@ -21669,7 +21669,7 @@ func (c *Checker) getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node *as | |||
| if links.resolvedType == nil { | |||
| // Deferred resolution of members is handled by resolveObjectTypeMembers | |||
| alias := c.getAliasForTypeNode(node) | |||
| if len(c.getMembersOfSymbol(node.Symbol())) == 0 && alias == nil { | |||
| if sym := node.Symbol(); sym == nil || len(c.getMembersOfSymbol(sym)) == 0 && alias == nil { | |||
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[nitpick] Consider adding parentheses around the second part of the condition to clarify operator precedence, e.g., sym == nil || (len(c.getMembersOfSymbol(sym)) == 0 && alias == nil).
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jakebailey
approved these changes
Jun 4, 2025
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ports microsoft/TypeScript#60358