name: duk_is_reference_error

proto: |
  duk_bool_t duk_is_reference_error(duk_context *ctx, duk_idx_t idx);

stack: |
  [ ... val! ... ]

summary: |
  <p>Returns 1 if value at <code>idx</code> inherits from <code>ReferenceError</code>,
  otherwise returns 0.  If <code>idx</code> is invalid, also returns 0.  This is
  a convenience call for using
  <code><a href="#duk_get_error_code">duk_get_error_code()</a> == DUK_ERR_REFERENCE_ERROR</code>.</p>

example: |
  if (duk_is_reference_error(ctx, -3)) {
      /* ... */
  }

tags:
  - stack
  - error

introduced: 1.4.0