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=proto
int duk_push_error_object(duk_context *ctx, int err_code, const char *fmt, ...);
=stack
[ ... ] -> [ ... err! ]
=summary
<p>Create a new error object and push it to the value stack (the error is not thrown).
Returns non-negative index (relative to stack bottom) of the pushed error object.</p>
<p>The <code>message</code> property of the error object will be set to a <code>sprintf</code>-formatted
string using <code>fmt</code> and the remaining arguments. The internal prototype for the created
error object is chosen based on <code>err_code</code>. For instance, <code>DUK_ERR_RANGE_ERROR</code>
causes the built-in <code>RangeError</code> prototype to be used. The valid range for error codes
is [1,16777215].</p>
=example
int err_idx;
err_idx = duk_push_error_object(ctx, DUK_ERR_TYPE_ERROR, "invalid argument value: %d", arg_value);
=tags
stack
object
error