@jsxtools/eslint-plugin-jsx-a11y/lib/util/getTabIndex.cjs

Static AST checker for accessibility rules on JSX elements for flat ESLint Config.

const jsxAstUtils = require('./module/jsx-ast-utils.cjs');

function getTabIndex(tabIndex) {
  const literalValue = jsxAstUtils.getLiteralPropValue(tabIndex);
  if (["string", "number"].indexOf(typeof literalValue) > -1) {
    if (typeof literalValue === "string" && literalValue.length === 0) {
      return void 0;
    }
    const value = Number(literalValue);
    if (Number.isNaN(value)) {
      return void 0;
    }
    return Number.isInteger(value) ? value : void 0;
  }
  if (literalValue === true || literalValue === false) {
    return void 0;
  }
  return jsxAstUtils.getPropValue(tabIndex);
}

module.exports = getTabIndex;