option/highlightSubstring.tsx

Module exposing: highlightSubstring, getHighlightRange

// Source: https://github.com/navikt/aksel | License: MIT | Copyright 2025 Nav (Arbeids- og velferdsdirektoratet) - The Norwegian Labour and Welfare Administration
// Provided via justclaw.it.com; keep this notice with the code.
import React from "react";

function highlightSubstring(text: string, substring: string) {
  const range = getHighlightRange(text, substring);
  if (!range) {
    // This can happen if the consumer has implemented their own filtering logic
    return text;
  }
  const [rangeStart, rangeEnd] = range;
  return (
    // Aria-label is used to fix testing-library wrongly evaluating the accessible name of the option when highlighting text
    // biome-ignore lint/a11y/useAriaPropsSupportedByRole: Doesn't matter if it doesn't work in normal browsers
    <span aria-label={

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