oberknecht-utils/lib-ts/utils/isBracketValid.ts

Utils for oberknecht packages

export function isBracketValid(str?: string): boolean {
  const brackets = [
    ["(", ")"],
    ["[", "]"],
    ["{", "}"],
  ];

  if (!str || typeof str !== "string") return false;

  let a: string[] = [];
  let s = str.split("");
  for (let i = 0; i < s.length; i++) {
    let b = s[i];
    if (brackets.map((a) => a[0]).includes(b)) a.push(b);
    else {
      let vi = brackets.map((a) => a[1]).indexOf(b);
      if (a.at(-1) !== brackets[vi][0]) return false;
      a.pop();
    }
  }

  return true;
}