Fix assertion functions accessed via wildcard imports

src/compiler/checker.ts

@@ -24490,6 +24490,7 @@ namespace ts {
         }
 
         function getExplicitTypeOfSymbol(symbol: Symbol, diagnostic?: Diagnostic) {
+            symbol = resolveSymbol(symbol);
             if (symbol.flags & (SymbolFlags.Function | SymbolFlags.Method | SymbolFlags.Class | SymbolFlags.ValueModule)) {
                 return getTypeOfSymbol(symbol);
             }
@@ -24529,7 +24530,7 @@ namespace ts {
                 switch (node.kind) {
                     case SyntaxKind.Identifier:
                         const symbol = getExportSymbolOfValueSymbolIfExported(getResolvedSymbol(node as Identifier));
-                        return getExplicitTypeOfSymbol(symbol.flags & SymbolFlags.Alias ? resolveAlias(symbol) : symbol, diagnostic);
+                        return getExplicitTypeOfSymbol(symbol, diagnostic);
                     case SyntaxKind.ThisKeyword:
                         return getExplicitThisType(node);
                     case SyntaxKind.SuperKeyword:

tests/baselines/reference/assertionFunctionWildcardImport1.js

@@ -0,0 +1,71 @@
+//// [tests/cases/compiler/assertionFunctionWildcardImport1.ts] ////
+
+//// [ts.ts]
+import * as Debug from "../debug";
+export { Debug };
+
+//// [debug.ts]
+export declare function assert(expression: unknown): asserts expression;
+
+
+//// [foo.ts]
+import * as ts from "./_namespaces/ts";
+import { Debug } from "./_namespaces/ts";
+
+ts.Debug.assert(true);
+Debug.assert(true);
+
+
+//// [ts.ts]
+export * from "../../core/_namespaces/ts"
+
+
+//// [bar.ts]
+import * as ts from "./_namespaces/ts";
+import { Debug } from "./_namespaces/ts";
+
+ts.Debug.assert(true);
+Debug.assert(true);
+
+
+//// [debug.js]
+"use strict";
+exports.__esModule = true;
+//// [ts.js]
+"use strict";
+exports.__esModule = true;
+exports.Debug = void 0;
+var Debug = require("../debug");
+exports.Debug = Debug;
+//// [foo.js]
+"use strict";
+exports.__esModule = true;
+var ts = require("./_namespaces/ts");
+var ts_1 = require("./_namespaces/ts");
+ts.Debug.assert(true);
+ts_1.Debug.assert(true);
+//// [ts.js]
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+exports.__esModule = true;
+__exportStar(require("../../core/_namespaces/ts"), exports);
+//// [bar.js]
+"use strict";
+exports.__esModule = true;
+var ts = require("./_namespaces/ts");
+var ts_1 = require("./_namespaces/ts");
+ts.Debug.assert(true);
+ts_1.Debug.assert(true);

tests/baselines/reference/assertionFunctionWildcardImport1.symbols

@@ -0,0 +1,58 @@
+=== tests/cases/compiler/src/core/_namespaces/ts.ts ===
+import * as Debug from "../debug";
+>Debug : Symbol(Debug, Decl(ts.ts, 0, 6))
+
+export { Debug };
+>Debug : Symbol(Debug, Decl(ts.ts, 1, 8))
+
+=== tests/cases/compiler/src/core/debug.ts ===
+export declare function assert(expression: unknown): asserts expression;
+>assert : Symbol(assert, Decl(debug.ts, 0, 0))
+>expression : Symbol(expression, Decl(debug.ts, 0, 31))
+>expression : Symbol(expression, Decl(debug.ts, 0, 31))
+
+
+=== tests/cases/compiler/src/core/foo.ts ===
+import * as ts from "./_namespaces/ts";
+>ts : Symbol(ts, Decl(foo.ts, 0, 6))
+
+import { Debug } from "./_namespaces/ts";
+>Debug : Symbol(Debug, Decl(foo.ts, 1, 8))
+
+ts.Debug.assert(true);
+>ts.Debug.assert : Symbol(ts.Debug.assert, Decl(debug.ts, 0, 0))
+>ts.Debug : Symbol(ts.Debug, Decl(ts.ts, 1, 8))
+>ts : Symbol(ts, Decl(foo.ts, 0, 6))
+>Debug : Symbol(ts.Debug, Decl(ts.ts, 1, 8))
+>assert : Symbol(ts.Debug.assert, Decl(debug.ts, 0, 0))
+
+Debug.assert(true);
+>Debug.assert : Symbol(ts.Debug.assert, Decl(debug.ts, 0, 0))
+>Debug : Symbol(Debug, Decl(foo.ts, 1, 8))
+>assert : Symbol(ts.Debug.assert, Decl(debug.ts, 0, 0))
+
+
+=== tests/cases/compiler/src/other/_namespaces/ts.ts ===
+
+export * from "../../core/_namespaces/ts"
+
+
+=== tests/cases/compiler/src/other/bar.ts ===
+import * as ts from "./_namespaces/ts";
+>ts : Symbol(ts, Decl(bar.ts, 0, 6))
+
+import { Debug } from "./_namespaces/ts";
+>Debug : Symbol(Debug, Decl(bar.ts, 1, 8))
+
+ts.Debug.assert(true);
+>ts.Debug.assert : Symbol(Debug.assert, Decl(debug.ts, 0, 0))
+>ts.Debug : Symbol(ts.Debug, Decl(ts.ts, 1, 8))
+>ts : Symbol(ts, Decl(bar.ts, 0, 6))
+>Debug : Symbol(ts.Debug, Decl(ts.ts, 1, 8))
+>assert : Symbol(Debug.assert, Decl(debug.ts, 0, 0))
+
+Debug.assert(true);
+>Debug.assert : Symbol(Debug.assert, Decl(debug.ts, 0, 0))
+>Debug : Symbol(Debug, Decl(bar.ts, 1, 8))
+>assert : Symbol(Debug.assert, Decl(debug.ts, 0, 0))
+

tests/baselines/reference/assertionFunctionWildcardImport1.types

@@ -0,0 +1,65 @@
+=== tests/cases/compiler/src/core/_namespaces/ts.ts ===
+import * as Debug from "../debug";
+>Debug : typeof Debug
+
+export { Debug };
+>Debug : typeof Debug
+
+=== tests/cases/compiler/src/core/debug.ts ===
+export declare function assert(expression: unknown): asserts expression;
+>assert : (expression: unknown) => asserts expression
+>expression : unknown
+
+
+=== tests/cases/compiler/src/core/foo.ts ===
+import * as ts from "./_namespaces/ts";
+>ts : typeof ts
+
+import { Debug } from "./_namespaces/ts";
+>Debug : typeof ts.Debug
+
+ts.Debug.assert(true);
+>ts.Debug.assert(true) : void
+>ts.Debug.assert : (expression: unknown) => asserts expression
+>ts.Debug : typeof ts.Debug
+>ts : typeof ts
+>Debug : typeof ts.Debug
+>assert : (expression: unknown) => asserts expression
+>true : true
+
+Debug.assert(true);
+>Debug.assert(true) : void
+>Debug.assert : (expression: unknown) => asserts expression
+>Debug : typeof ts.Debug
+>assert : (expression: unknown) => asserts expression
+>true : true
+
+
+=== tests/cases/compiler/src/other/_namespaces/ts.ts ===
+
+export * from "../../core/_namespaces/ts"
+
+
+=== tests/cases/compiler/src/other/bar.ts ===
+import * as ts from "./_namespaces/ts";
+>ts : typeof ts
+
+import { Debug } from "./_namespaces/ts";
+>Debug : typeof ts.Debug
+
+ts.Debug.assert(true);
+>ts.Debug.assert(true) : void
+>ts.Debug.assert : (expression: unknown) => asserts expression
+>ts.Debug : typeof ts.Debug
+>ts : typeof ts
+>Debug : typeof ts.Debug
+>assert : (expression: unknown) => asserts expression
+>true : true
+
+Debug.assert(true);
+>Debug.assert(true) : void
+>Debug.assert : (expression: unknown) => asserts expression
+>Debug : typeof ts.Debug
+>assert : (expression: unknown) => asserts expression
+>true : true
+

tests/baselines/reference/assertionFunctionWildcardImport2.js

@@ -0,0 +1,40 @@
+//// [tests/cases/compiler/assertionFunctionWildcardImport2.ts] ////
+
+//// [asserts.ts]
+function isNonNullable<T>(obj: T): asserts obj is NonNullable<T> {
+    if (obj === undefined || obj === null) {
+        throw new Error("Must not be a nullable value");
+    }
+}
+
+export {
+    isNonNullable
+};
+
+//// [test.ts]
+import * as asserts from "./asserts";
+
+function test(obj: string | null): void {
+    asserts.isNonNullable(obj);
+    obj.trim();
+}
+
+
+//// [asserts.js]
+"use strict";
+exports.__esModule = true;
+exports.isNonNullable = void 0;
+function isNonNullable(obj) {
+    if (obj === undefined || obj === null) {
+        throw new Error("Must not be a nullable value");
+    }
+}
+exports.isNonNullable = isNonNullable;
+//// [test.js]
+"use strict";
+exports.__esModule = true;
+var asserts = require("./asserts");
+function test(obj) {
+    asserts.isNonNullable(obj);
+    obj.trim();
+}

tests/baselines/reference/assertionFunctionWildcardImport2.symbols

@@ -0,0 +1,46 @@
+=== tests/cases/compiler/asserts.ts ===
+function isNonNullable<T>(obj: T): asserts obj is NonNullable<T> {
+>isNonNullable : Symbol(isNonNullable, Decl(asserts.ts, 0, 0))
+>T : Symbol(T, Decl(asserts.ts, 0, 23))
+>obj : Symbol(obj, Decl(asserts.ts, 0, 26))
+>T : Symbol(T, Decl(asserts.ts, 0, 23))
+>obj : Symbol(obj, Decl(asserts.ts, 0, 26))
+>NonNullable : Symbol(NonNullable, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(asserts.ts, 0, 23))
+
+    if (obj === undefined || obj === null) {
+>obj : Symbol(obj, Decl(asserts.ts, 0, 26))
+>undefined : Symbol(undefined)
+>obj : Symbol(obj, Decl(asserts.ts, 0, 26))
+
+        throw new Error("Must not be a nullable value");
+>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+    }
+}
+
+export {
+    isNonNullable
+>isNonNullable : Symbol(isNonNullable, Decl(asserts.ts, 6, 8))
+
+};
+
+=== tests/cases/compiler/test.ts ===
+import * as asserts from "./asserts";
+>asserts : Symbol(asserts, Decl(test.ts, 0, 6))
+
+function test(obj: string | null): void {
+>test : Symbol(test, Decl(test.ts, 0, 37))
+>obj : Symbol(obj, Decl(test.ts, 2, 14))
+
+    asserts.isNonNullable(obj);
+>asserts.isNonNullable : Symbol(asserts.isNonNullable, Decl(asserts.ts, 6, 8))
+>asserts : Symbol(asserts, Decl(test.ts, 0, 6))
+>isNonNullable : Symbol(asserts.isNonNullable, Decl(asserts.ts, 6, 8))
+>obj : Symbol(obj, Decl(test.ts, 2, 14))
+
+    obj.trim();
+>obj.trim : Symbol(String.trim, Decl(lib.es5.d.ts, --, --))
+>obj : Symbol(obj, Decl(test.ts, 2, 14))
+>trim : Symbol(String.trim, Decl(lib.es5.d.ts, --, --))
+}
+

tests/baselines/reference/assertionFunctionWildcardImport2.types

@@ -0,0 +1,50 @@
+=== tests/cases/compiler/asserts.ts ===
+function isNonNullable<T>(obj: T): asserts obj is NonNullable<T> {
+>isNonNullable : <T>(obj: T) => asserts obj is NonNullable<T>
+>obj : T
+
+    if (obj === undefined || obj === null) {
+>obj === undefined || obj === null : boolean
+>obj === undefined : boolean
+>obj : T
+>undefined : undefined
+>obj === null : boolean
+>obj : T & ({} | null)
+>null : null
+
+        throw new Error("Must not be a nullable value");
+>new Error("Must not be a nullable value") : Error
+>Error : ErrorConstructor
+>"Must not be a nullable value" : "Must not be a nullable value"
+    }
+}
+
+export {
+    isNonNullable
+>isNonNullable : <T>(obj: T) => asserts obj is NonNullable<T>
+
+};
+
+=== tests/cases/compiler/test.ts ===
+import * as asserts from "./asserts";
+>asserts : typeof asserts
+
+function test(obj: string | null): void {
+>test : (obj: string | null) => void
+>obj : string | null
+>null : null
+
+    asserts.isNonNullable(obj);
+>asserts.isNonNullable(obj) : void
+>asserts.isNonNullable : <T>(obj: T) => asserts obj is NonNullable<T>
+>asserts : typeof asserts
+>isNonNullable : <T>(obj: T) => asserts obj is NonNullable<T>
+>obj : string | null
+
+    obj.trim();
+>obj.trim() : string
+>obj.trim : () => string
+>obj : string
+>trim : () => string
+}
+

tests/cases/compiler/assertionFunctionWildcardImport1.ts

@@ -0,0 +1,28 @@
+// @strict: true
+
+// @filename: src/core/_namespaces/ts.ts
+import * as Debug from "../debug";
+export { Debug };
+
+// @filename: src/core/debug.ts
+export declare function assert(expression: unknown): asserts expression;
+
+
+// @filename: src/core/foo.ts
+import * as ts from "./_namespaces/ts";
+import { Debug } from "./_namespaces/ts";
+
+ts.Debug.assert(true);
+Debug.assert(true);
+
+
+// @filename: src/other/_namespaces/ts.ts
+export * from "../../core/_namespaces/ts"
+
+
+// @filename: src/other/bar.ts
+import * as ts from "./_namespaces/ts";
+import { Debug } from "./_namespaces/ts";
+
+ts.Debug.assert(true);
+Debug.assert(true);