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'use strict';
/**
* @description
*
* This object extends the error class and provides interpolation capability
* to make it easier to write and read Error messages within Angular. It can
* be called as follows:
*
* throw ngError(13, 'This {0} is {1}', foo, bar);
*
* The above will replace {0} with the value of foo, and {1} with the value of
* bar. The object is not restricted in the number of arguments it can take.
*
* If fewer arguments are specified than necessary for interpolation, the extra
* interpolation markers will be preserved in the final string.
*
* @param {...} arguments The first argument to this object is the error
* number, the second argument the message with templated points for
* Interpolation (of the for {0} for the first, {1} for the second and
* so on). The second argument onwards are interpolated into the error
* message string in order.
*/
function ngError() {
var message = '[NgErr' + arguments[0] + '] ' + arguments[1],
i = 0,
l = arguments.length - 2,
curlyRegexp, arg;
for (; i < l; i++) {
curlyRegexp = new RegExp("\\{" + i + "\\}", "gm");
arg = arguments[i + 2];
if (isFunction(arg)) {
arg = arg.toString().replace(/ \{[\s\S]*$/, '');
} else if (!isString(arg)) {
arg = toJson(arg);
}
message = message.replace(curlyRegexp, arg);
}
// even if we are called as constructor we can bypass the new ngError instance and return
// an instance of a real Error that contains correct stack info + extra frame for ngError call
// TODO(i): can we rewrite the stack string to remove ngError frame?
return new Error(message);
}
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