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JavaScript string repeat count was too large

RangeError: repeat count must be less than infinity

JavaScript rejected a string repeat operation because the requested output would be too large.

RangeError: repeat count must be less than infinityruntime

Observed message

RangeError: repeat count must be less than infinity

Why it happens

  • String.repeat received an extremely large count.
  • User input or computed values were passed into repeat() without bounds checking.
  • A size multiplier produced unrealistic output volume.

How to fix it

  1. Validate and cap repeat counts before calling repeat().
  2. Avoid building huge strings in memory when streaming or chunking would work better.
  3. Trace where the count originates and stop runaway multiplication or parsing bugs.

Official reference

MDN: RangeError: repeat count must be less than infinity

Related errors

ReferenceError: can't access lexical declaration before initializationJavaScript accessed a let or const binding before initializationReferenceError: assignment to undeclared variableJavaScript assigned to an undeclared variableTypeError: class constructors must be invoked with 'new'JavaScript class constructor was called without newRangeError: x can't be converted to BigInt because it isn't an integerJavaScript could not convert a non-integer value to BigInt

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