get-or-throw/dist/index.js

A convenience function for safely getting values from dynamic objects and arrays

// src/get-or-throw.ts
function getOrThrow(objOrArr, keyOrIndex, errorMessage) {
  if (Array.isArray(objOrArr)) {
    const length = objOrArr.length;
    let index = keyOrIndex;
    if (index < 0) {
      index = length + index;
    }
    if (index >= 0 && index < length) {
      const value = objOrArr[index];
      if (value === void 0) {
        throw new Error(
          errorMessage ?? `Value at index ${String(keyOrIndex)} is undefined.`
        );
      }
      return value;
    } else {
      throw new Error(
        errorMessage ?? `Index ${String(keyOrIndex)} is out of bounds.`
      );
    }
  } else {
    if (keyOrIndex in objOrArr) {
      const value = objOrArr[keyOrIndex];
      if (value === void 0) {
        throw new Error(
          errorMessage ?? `Value at key "${String(keyOrIndex)}" is undefined.`
        );
      }
      return value;
    } else {
      throw new Error(
        errorMessage ?? `Key "${String(keyOrIndex)}" does not exist in the object.`
      );
    }
  }
}
export {
  getOrThrow,
  getOrThrow as got
};