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define(["require", "exports", "../constants/metadata_keys", "../planning/metadata"], function (require, exports, METADATA_KEY, metadata_1) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var traverseAncerstors = function (request, constraint) {
var parent = request.parentRequest;
if (parent !== null) {
return constraint(parent) ? true : traverseAncerstors(parent, constraint);
}
else {
return false;
}
};
exports.traverseAncerstors = traverseAncerstors;
var taggedConstraint = function (key) { return function (value) {
var constraint = function (request) {
return request !== null && request.target !== null && request.target.matchesTag(key)(value);
};
constraint.metaData = new metadata_1.Metadata(key, value);
return constraint;
}; };
exports.taggedConstraint = taggedConstraint;
var namedConstraint = taggedConstraint(METADATA_KEY.NAMED_TAG);
exports.namedConstraint = namedConstraint;
var typeConstraint = function (type) { return function (request) {
var binding = null;
if (request !== null) {
binding = request.bindings[0];
if (typeof type === "string") {
var serviceIdentifier = binding.serviceIdentifier;
return serviceIdentifier === type;
}
else {
var constructor = request.bindings[0].implementationType;
return type === constructor;
}
}
return false;
}; };
exports.typeConstraint = typeConstraint;
});
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