Function valueToSource

packages/core/src/document/prop/value-to-source.ts:26–225

(
  value: any,
  {
    circularReferenceToken = 'CIRCULAR_REFERENCE',
    doubleQuote = true,
    includeFunctions = true,
    includeUndefinedProperties = false,
    indentLevel = 0,
    indentString = '  ',
    lineEnding = '\n',
    visitedObjects = new Set(),
  }: any = {},
)

 * @returns
 */
export const valueToSource = (
  value: any,
  {
    circularReferenceToken = 'CIRCULAR_REFERENCE',
    doubleQuote = true,
    includeFunctions = true,
    includeUndefinedProperties = false,
    indentLevel = 0,
    indentString = '  ',
    lineEnding = '\n',
    visitedObjects = new Set(),
  }: any = {},
): any => {
  switch (typeof value) {
    case 'boolean':
      return value ? `${indentString.repeat(indentLevel)}true` : `${indentString.repeat(indentLevel)}false`
    case 'function':
      if (includeFunctions) {
        return `${indentString.repeat(indentLevel)}${value}`
      }
      return null
    case 'number':
      return `${indentString.repeat(indentLevel)}${value}`
    case 'object':
      if (!value) {
        return `${indentString.repeat(indentLevel)}null`
      }

      if (visitedObjects.has(value)) {
        return `${indentString.repeat(indentLevel)}${circularReferenceToken}`
      }

      if (value instanceof Date) {
        return `${indentString.repeat(indentLevel)}new Date(${quoteString(value.toISOString(), {
          doubleQuote,
        })})`
      }

      if (value instanceof Map) {
        return value.size
          ? `${indentString.repeat(indentLevel)}new Map(${valueToSource([...value], {
              circularReferenceToken,
              doubleQuote,
              includeFunctions,
              includeUndefinedProperties,
              indentLevel,
              indentString,
              lineEnding,
              visitedObjects: new Set([value, ...visitedObjects]),
            }).slice(indentLevel * indentString.length)})`
          : `${indentString.repeat(indentLevel)}new Map()`
      }

      if (value instanceof RegExp) {
        return `${indentString.repeat(indentLevel)}/${value.source}/${value.flags}`
      }

      if (value instanceof Set) {