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'use strict';
/**
* @description
*
* This object provides a utility for producing rich Error messages within
* Angular. It can be called as follows:
*
* var exampleMinErr = minErr('example');
* throw exampleMinErr('one', 'This {0} is {1}', foo, bar);
*
* The above creates an instance of minErr in the example namespace. The
* resulting error will have a namespaced error code of example.one. The
* resulting error 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.
*
* Since data will be parsed statically during a build step, some restrictions
* are applied with respect to how minErr instances are created and called.
* Instances should have names of the form namespaceMinErr for a minErr created
* using minErr('namespace') . Error codes, namespaces and template strings
* should all be static strings, not variables or general expressions.
*
* @param {string} module The namespace to use for the new minErr instance.
* @returns {function(code:string, template:string, ...templateArgs): Error} minErr instance
*/
function minErr(module) {
return function () {
var code = arguments[0],
prefix = '[' + (module ? module + ':' : '') + code + '] ',
template = arguments[1],
templateArgs = arguments,
stringify = function (obj) {
if (typeof obj === 'function') {
return obj.toString().replace(/ \{[\s\S]*$/, '');
} else if (typeof obj === 'undefined') {
return 'undefined';
} else if (typeof obj !== 'string') {
return JSON.stringify(obj);
}
return obj;
},
message, i;
message = prefix + template.replace(/\{\d+\}/g, function (match) {
var index = +match.slice(1, -1), arg;
if (index + 2 < templateArgs.length) {
arg = templateArgs[index + 2];
if (typeof arg === 'function') {
return arg.toString().replace(/ ?\{[\s\S]*$/, '');
} else if (typeof arg === 'undefined') {
return 'undefined';
} else if (typeof arg !== 'string') {
return toJson(arg);
}
return arg;
}
return match;
});
message = message + '\nhttp://errors.angularjs.org/"NG_VERSION_FULL"/' +
(module ? module + '/' : '') + code;
for (i = 2; i < arguments.length; i++) {
message = message + (i == 2 ? '?' : '&') + 'p' + (i-2) + '=' +
encodeURIComponent(stringify(arguments[i]));
}
return new Error(message);
};
}
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