Function combineTypes

test/fixtures/snapshot/typescript.js:157267–157295

(inferences)

                return combineTypes(inferTypes(usage));
            }
            function combineTypes(inferences) {
                if (!inferences.length)
                    return checker.getAnyType();
                // 1. string or number individually override string | number
                // 2. non-any, non-void overrides any or void
                // 3. non-nullable, non-any, non-void, non-anonymous overrides anonymous types
                var stringNumber = checker.getUnionType([checker.getStringType(), checker.getNumberType()]);
                var priorities = [
                    {
                        high: function (t) { return t === checker.getStringType() || t === checker.getNumberType(); },
                        low: function (t) { return t === stringNumber; }
                    },
                    {
                        high: function (t) { return !(t.flags & (1 /* TypeFlags.Any */ | 16384 /* TypeFlags.Void */)); },
                        low: function (t) { return !!(t.flags & (1 /* TypeFlags.Any */ | 16384 /* TypeFlags.Void */)); }
                    },
                    {
                        high: function (t) { return !(t.flags & (98304 /* TypeFlags.Nullable */ | 1 /* TypeFlags.Any */ | 16384 /* TypeFlags.Void */)) && !(ts.getObjectFlags(t) & 16 /* ObjectFlags.Anonymous */); },
                        low: function (t) { return !!(ts.getObjectFlags(t) & 16 /* ObjectFlags.Anonymous */); }
                    }
                ];
                var good = removeLowPriorityInferences(inferences, priorities);
                var anons = good.filter(function (i) { return ts.getObjectFlags(i) & 16 /* ObjectFlags.Anonymous */; });
                if (anons.length) {
                    good = good.filter(function (i) { return !(ts.getObjectFlags(i) & 16 /* ObjectFlags.Anonymous */); });
                    good.push(combineAnonymousTypes(anons));
                }
                return checker.getWidenedType(checker.getUnionType(good.map(checker.getBaseTypeOfLiteralType), 2 /* UnionReduction.Subtype */));
            }
            function combineAnonymousTypes(anons) {
                if (anons.length === 1) {
                    return anons[0];