Function iterate

packages/jss-plugin-default-unit/src/index.js:22–52

* Recursive deep style passing function

(prop, value, options)

 * Recursive deep style passing function
 */
function iterate(prop, value, options) {
  if (value == null) return value

  if (Array.isArray(value)) {
    for (let i = 0; i < value.length; i++) {
      value[i] = iterate(prop, value[i], options)
    }
  } else if (typeof value === 'object') {
    if (prop === 'fallbacks') {
      for (const innerProp in value) {
        value[innerProp] = iterate(innerProp, value[innerProp], options)
      }
    } else {
      for (const innerProp in value) {
        value[innerProp] = iterate(`${prop}-${innerProp}`, value[innerProp], options)
      }
    }
    // eslint-disable-next-line no-restricted-globals
  } else if (typeof value === 'number' && isNaN(value) === false) {
    const unit = options[prop] || units[prop]

    // Add the unit if available, except for the special case of 0px.
    if (unit && !(value === 0 && unit === px)) {
      return typeof unit === 'function' ? unit(value).toString() : `${value}${unit}`
    }

    return value.toString()
  }

  return value
}

/**
 * Add unit to numeric values.