Language: JavaScript
Label: vulnerable
CWE: CWE-89 \u2014 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.

Code:
  minifySql(sql) {
    // replace all consecutive whitespaces with a single plain space character
    return sql.replace(/\s+/g, ' ')
      // remove space before coma
      .replace(/ ,/g, ',')
      // remove whitespace at start & end
      .trim();
  }