Function getSignatureFromCalls

test/fixtures/snapshot/typescript.js:157488–157504

(calls)

                return checker.createAnonymousType(/*symbol*/ undefined, ts.createSymbolTable(), [getSignatureFromCalls(calls)], ts.emptyArray, ts.emptyArray);
            }
            function getSignatureFromCalls(calls) {
                var parameters = [];
                var length = Math.max.apply(Math, calls.map(function (c) { return c.argumentTypes.length; }));
                var _loop_16 = function (i) {
                    var symbol = checker.createSymbol(1 /* SymbolFlags.FunctionScopedVariable */, ts.escapeLeadingUnderscores("arg".concat(i)));
                    symbol.type = combineTypes(calls.map(function (call) { return call.argumentTypes[i] || checker.getUndefinedType(); }));
                    if (calls.some(function (call) { return call.argumentTypes[i] === undefined; })) {
                        symbol.flags |= 16777216 /* SymbolFlags.Optional */;
                    }
                    parameters.push(symbol);
                };
                for (var i = 0; i < length; i++) {
                    _loop_16(i);
                }
                var returnType = combineFromUsage(combineUsages(calls.map(function (call) { return call.return_; })));
                return checker.createSignature(/*declaration*/ undefined, /*typeParameters*/ undefined, /*thisParameter*/ undefined, parameters, returnType, /*typePredicate*/ undefined, length, 0 /* SignatureFlags.None */);
            }
            function addCandidateType(usage, type) {
                if (type && !(type.flags & 1 /* TypeFlags.Any */) && !(type.flags & 131072 /* TypeFlags.Never */)) {
                    (usage.candidateTypes || (usage.candidateTypes = [])).push(type);