• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have read the FAQ and my problem is not listed.

Repro

{
  "rules": {
    "@typescript-eslint/prefer-string-starts-ends-with": ["error"]
  }
}

export function isThreeCharPrefixMatch(str: string, candidate: string): boolean {
  return str.substring(0, 3) === candidate;
}

tsconfig: the default as generated by tsc --init
Expected Result
No error, since a substring call other than substring(0) can not be replaced with startsWith alone.

Actual Result
The following error was printed:

2:10  error  Use 'String#startsWith' method instead  @typescript-eslint/prefer-string-starts-ends-with

Additional Info
Consider the code with the change suggested by the linter:

export function isThreeCharPrefixMatchB(str: string, candidate: string): boolean {
  return str.startsWith(candidate);
}

Now

> isThreeCharPrefixMatch("int32", "in");
false
> isThreeCharPrefixMatchB("int32", "in");
true

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