Code Review (Easy): Cleaning Up Dashboard Inputs

Story

Lena started building a helper for the internal dashboard to extract numeric values from messy text labels provided by the engineering teams. Mark reviewed the initial draft and pointed out that the inputs often come with accidental leading spaces or trailing text that could break the display if not handled properly. He asked her to make sure the tool handles positive and negative signs correctly, ignores any zeros at the beginning, and simply caps the number if it exceeds the system's standard capacity. For example, if the tool receives a string like ' -00123units', it should be smart enough to ignore the spaces and the word 'units' to just return -123.

Your Task

Read the story and code, then decide if the code is ready for production or needs improvement.

Hints

What would block an approval? Give me a hint.

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function my_atoi(client_input: string): number {
  const INT_MAX = 2147483647;
  const int_min = -2147483648;

const n = client_input.length;
  const customer_length = n;
  const Len = customer_length;

let i = 0;

while (i < Len && client_input[i] === ' ') i++;

if (i >= n) return 0;

let Sign = 1;
  if (client_input[i] === '+' || client_input[i] === '-') {
    if (client_input[i] === '-') Sign = -1;
    i++;
  }

let acc = 0;
  let digits_read = false;
  const maxDiv10 = Math.floor(INT_MAX / 10);
  const max_mod_10 = INT_MAX % 10;

while (i < Len && client_input[i] === '0') {
    digits_read = true;
    i++;
  }

while (i < n) {
    const ch = client_input[i];
    if (ch < '0' || ch > '9') break;
    digits_read = true;
    const digit = ch.charCodeAt(0) - 48;

if (acc > maxDiv10 || (acc === maxDiv10 && digit > max_mod_10)) {
      return Sign === 1 ? INT_MAX : int_min;
    }

acc = acc * 10 + digit;
    i++;
  }

if (!digits_read) return 0;

const finalValue = Sign * acc;
  if (finalValue < int_min) return int_min;
  if (finalValue > INT_MAX) return INT_MAX;
  return finalValue;
}

const myAtoi = my_atoi;