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define(["require", "exports", "../constants/metadata_keys", "../planning/metadata", "./decorator_utils"], function (require, exports, METADATA_KEY, metadata_1, decorator_utils_1) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function optional() {
return function (target, targetKey, index) {
var metadata = new metadata_1.Metadata(METADATA_KEY.OPTIONAL_TAG, true);
if (typeof index === "number") {
decorator_utils_1.tagParameter(target, targetKey, index, metadata);
}
else {
decorator_utils_1.tagProperty(target, targetKey, metadata);
}
};
}
exports.optional = optional;
});
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