nba/src/util/string.js

JavaScript client for the NBA's stats API

function hasUnderscoreOrHyphen (str) {
  return str.indexOf("-") > -1 || str.indexOf("_") > -1;
}

// downcases the first letter in a string
// good for converting from PascalCase to camelCase
function downcaseFirst (str) {
  return str[0].toLowerCase() + str.slice(1);
}

// converts a dash or hypen separated string to camelCase
function unDashHyphen (str) {
  return str
    .trim()
    .toLowerCase()
    .replace(/[-_\s]+(.)?/g, function (match, c) {
      return c ? c.toUpperCase() : "";
    });
}

// checks if a string consists of only uppercase letters
function isAllUpperCase (str) {
  return str
    .split("")
    .map(ch => ch.charCodeAt(0))
    .every(n => n >= 65 && n <= 90);
}

function jsify (str) {
  if (isAllUpperCase(str)) {
    return str.toLowerCase();
  }

  if (hasUnderscoreOrHyphen(str)) {
    return unDashHyphen(str);
  }

  return downcaseFirst(str);
}

function interpolate (_str) {
  return function (obj) {
    return Object.keys(obj).reduce(function (str, key) {
      return str.replace(new RegExp(`__${key}__`, "g"), obj[key]);
    }, _str);
  };
}

module.exports = {
  hasUnderscoreOrHyphen,
  downcaseFirst,
  unDashHyphen,
  isAllUpperCase,
  jsify,
  interpolate,
};