Anything that would possibly match more than a single character is invalid in...
Production Risk
Build will fail; resolve before shipping.
A syntax error (TS1518): Anything that would possibly match more than a single character is invalid inside a negated character class.. This diagnostic is emitted by the TypeScript compiler when anything that would possibly match more than a single character is invalid inside a negated character class..
- 1Incorrect TypeScript syntax or type usage
- 2Type mismatch between declared and actual value
TypeScript compiler reports TS1518 during type checking.
// Triggers TS1518 // Anything that would possibly match more than a single character is invalid inside a negated character class.
expected output
error TS1518: Anything that would possibly match more than a single character is invalid inside a negated character class.
Fix
Address the TypeScript diagnostic
WHEN When this error is reported by the compiler
// Run the TypeScript compiler for details: npx tsc --noEmit // Use the TypeScript playground to test your code: // https://www.typescriptlang.org/play
Why this works
Review the full error message and location; the TypeScript handbook provides guidance on each error category.
TypeScript Compiler Diagnostics
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