Set impliedNodeFormat on sourceFile we get from host to ensure the field is set correctly

src/compiler/program.ts

@@ -168,10 +168,10 @@ namespace ts {
         const originalDirectoryExists = host.directoryExists;
         const originalCreateDirectory = host.createDirectory;
         const originalWriteFile = host.writeFile;
-        const readFileCache = new Map<string, string | false>();
-        const fileExistsCache = new Map<string, boolean>();
-        const directoryExistsCache = new Map<string, boolean>();
-        const sourceFileCache = new Map<string, SourceFile>();
+        const readFileCache = new Map<Path, string | false>();
+        const fileExistsCache = new Map<Path, boolean>();
+        const directoryExistsCache = new Map<Path, boolean>();
+        const sourceFileCache = new Map<SourceFile["impliedNodeFormat"], ESMap<Path, SourceFile>>();
 
         const readFileWithCache = (fileName: string): string | undefined => {
             const key = toPath(fileName);
@@ -196,14 +196,16 @@ namespace ts {
             return setReadFileCache(key, fileName);
         };
 
-        const getSourceFileWithCache: CompilerHost["getSourceFile"] | undefined = getSourceFile ? (fileName, languageVersion, onError, shouldCreateNewSourceFile) => {
+        const getSourceFileWithCache: CompilerHost["getSourceFile"] | undefined = getSourceFile ? (fileName, languageVersionOrOptions, onError, shouldCreateNewSourceFile) => {
             const key = toPath(fileName);
-            const value = sourceFileCache.get(key);
+            const impliedNodeFormat: SourceFile["impliedNodeFormat"] = typeof languageVersionOrOptions === "object" ? languageVersionOrOptions.impliedNodeFormat : undefined;
+            const forImpliedNodeFormat = sourceFileCache.get(impliedNodeFormat);
+            const value = forImpliedNodeFormat?.get(key);
             if (value) return value;
 
-            const sourceFile = getSourceFile(fileName, languageVersion, onError, shouldCreateNewSourceFile);
+            const sourceFile = getSourceFile(fileName, languageVersionOrOptions, onError, shouldCreateNewSourceFile);
             if (sourceFile && (isDeclarationFileName(fileName) || fileExtensionIs(fileName, Extension.Json))) {
-                sourceFileCache.set(key, sourceFile);
+                sourceFileCache.set(impliedNodeFormat, (forImpliedNodeFormat || new Map()).set(key, sourceFile));
             }
             return sourceFile;
         } : undefined;
@@ -225,13 +227,15 @@ namespace ts {
                 const value = readFileCache.get(key);
                 if (value !== undefined && value !== data) {
                     readFileCache.delete(key);
-                    sourceFileCache.delete(key);
+                    sourceFileCache.forEach(map => map.delete(key));
                 }
                 else if (getSourceFileWithCache) {
-                    const sourceFile = sourceFileCache.get(key);
-                    if (sourceFile && sourceFile.text !== data) {
-                        sourceFileCache.delete(key);
-                    }
+                    sourceFileCache.forEach(map => {
+                        const sourceFile = map.get(key);
+                        if (sourceFile && sourceFile.text !== data) {
+                            map.delete(key);
+                        }
+                    });
                 }
                 originalWriteFile.call(host, fileName, data, ...rest);
             };

src/harness/fakesHosts.ts

@@ -41,6 +41,7 @@ namespace fakes {
         }
 
         public write(message: string) {
+            if (ts.Debug.isDebugging) console.log(message);
             this.output.push(message);
         }
 

src/harness/virtualFileSystemWithWatch.ts

@@ -985,6 +985,7 @@ interface Array<T> { length: number; [n: number]: T; }`
         }
 
         write(message: string) {
+            if (Debug.isDebugging) console.log(message);
             this.output.push(message);
         }
 

src/testRunner/unittests/tsbuild/moduleResolution.ts

@@ -86,4 +86,36 @@ namespace ts.tscWatch {
             commandLineArgs: ["-b", "/src/packages/pkg1.tsconfig.json", "/src/packages/pkg2.tsconfig.json", "--verbose", "--traceResolution"],
         });
     });
-}
+
+    describe("unittests:: tsbuild:: moduleResolution:: impliedNodeFormat differs between projects for shared file", () => {
+        verifyTscWithEdits({
+            scenario: "moduleResolution",
+            subScenario: "impliedNodeFormat differs between projects for shared file",
+            fs: () => loadProjectFromFiles({
+                "/src/projects/a/src/index.ts": "",
+                "/src/projects/a/tsconfig.json": JSON.stringify({
+                    compilerOptions: { strict: true }
+                }),
+                "/src/projects/b/src/index.ts": Utils.dedent`
+                    import pg from "pg";
+                    pg.foo();
+                `,
+                "/src/projects/b/tsconfig.json": JSON.stringify({
+                    compilerOptions: { strict: true, module: "node16" }
+                }),
+                "/src/projects/b/package.json": JSON.stringify({
+                    name: "b",
+                    type: "module"
+                }),
+                "/src/projects/node_modules/@types/pg/index.d.ts": "export function foo(): void;",
+                "/src/projects/node_modules/@types/pg/package.json": JSON.stringify({
+                    name: "@types/pg",
+                    types: "index.d.ts",
+                }),
+            }),
+            modifyFs: fs => fs.writeFileSync("/lib/lib.es2022.full.d.ts", libFile.content),
+            commandLineArgs: ["-b", "/src/projects/a", "/src/projects/b", "--verbose", "--traceResolution", "--explainFiles"],
+            edits: noChangeOnlyRuns
+        });
+    });
+}

tests/baselines/reference/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js

@@ -0,0 +1,151 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/lib/lib.es2022.full.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+
+//// [/src/projects/a/src/index.ts]
+
+
+//// [/src/projects/a/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/src/projects/b/package.json]
+{"name":"b","type":"module"}
+
+//// [/src/projects/b/src/index.ts]
+import pg from "pg";
+pg.foo();
+
+
+//// [/src/projects/b/tsconfig.json]
+{"compilerOptions":{"strict":true,"module":"node16"}}
+
+//// [/src/projects/node_modules/@types/pg/index.d.ts]
+export function foo(): void;
+
+//// [/src/projects/node_modules/@types/pg/package.json]
+{"name":"@types/pg","types":"index.d.ts"}
+
+
+
+Output::
+/lib/tsc -b /src/projects/a /src/projects/b --verbose --traceResolution --explainFiles
+[12:00:22 AM] Projects in this build: 
+    * src/projects/a/tsconfig.json
+    * src/projects/b/tsconfig.json
+
+[12:00:23 AM] Project 'src/projects/a/tsconfig.json' is out of date because output file 'src/projects/a/src/index.js' does not exist
+
+[12:00:24 AM] Building project '/src/projects/a/tsconfig.json'...
+
+======== Resolving type reference directive 'pg', containing file '/src/projects/a/__inferred type names__.ts', root directory '/src/projects/node_modules/@types'. ========
+Resolving with primary search path '/src/projects/node_modules/@types'.
+Found 'package.json' at '/src/projects/node_modules/@types/pg/package.json'.
+'package.json' does not have a 'typesVersions' field.
+'package.json' does not have a 'typings' field.
+'package.json' has 'types' field 'index.d.ts' that references '/src/projects/node_modules/@types/pg/index.d.ts'.
+File '/src/projects/node_modules/@types/pg/index.d.ts' exist - use it as a name resolution result.
+Resolving real path for '/src/projects/node_modules/@types/pg/index.d.ts', result '/src/projects/node_modules/@types/pg/index.d.ts'.
+======== Type reference directive 'pg' was successfully resolved to '/src/projects/node_modules/@types/pg/index.d.ts', primary: true. ========
+lib/lib.d.ts
+  Default library for target 'es3'
+src/projects/a/src/index.ts
+  Matched by default include pattern '**/*'
+src/projects/node_modules/@types/pg/index.d.ts
+  Entry point for implicit type library 'pg'
+[12:00:26 AM] Project 'src/projects/b/tsconfig.json' is out of date because output file 'src/projects/b/src/index.js' does not exist
+
+[12:00:27 AM] Building project '/src/projects/b/tsconfig.json'...
+
+File '/src/projects/b/src/package.json' does not exist.
+Found 'package.json' at '/src/projects/b/package.json'.
+'package.json' does not have a 'typesVersions' field.
+======== Resolving module 'pg' from '/src/projects/b/src/index.ts'. ========
+Module resolution kind is not specified, using 'Node16'.
+Resolving in ESM mode with conditions 'node', 'import', 'types'.
+File '/src/projects/b/src/package.json' does not exist according to earlier cached lookups.
+File '/src/projects/b/package.json' exists according to earlier cached lookups.
+Loading module 'pg' from 'node_modules' folder, target file type 'TypeScript'.
+Directory '/src/projects/b/src/node_modules' does not exist, skipping all lookups in it.
+Directory '/src/projects/b/node_modules' does not exist, skipping all lookups in it.
+File '/src/projects/node_modules/@types/pg/package.json' exists according to earlier cached lookups.
+'package.json' does not have a 'typings' field.
+'package.json' has 'types' field 'index.d.ts' that references '/src/projects/node_modules/@types/pg/index.d.ts'.
+File '/src/projects/node_modules/@types/pg/index.d.ts' exist - use it as a name resolution result.
+Resolving real path for '/src/projects/node_modules/@types/pg/index.d.ts', result '/src/projects/node_modules/@types/pg/index.d.ts'.
+======== Module name 'pg' was successfully resolved to '/src/projects/node_modules/@types/pg/index.d.ts'. ========
+File '/src/projects/node_modules/@types/pg/package.json' exists according to earlier cached lookups.
+======== Resolving type reference directive 'pg', containing file '/src/projects/b/__inferred type names__.ts', root directory '/src/projects/node_modules/@types'. ========
+Resolving with primary search path '/src/projects/node_modules/@types'.
+File '/src/projects/node_modules/@types/pg/package.json' exists according to earlier cached lookups.
+'package.json' does not have a 'typings' field.
+'package.json' has 'types' field 'index.d.ts' that references '/src/projects/node_modules/@types/pg/index.d.ts'.
+File '/src/projects/node_modules/@types/pg/index.d.ts' exist - use it as a name resolution result.
+Resolving real path for '/src/projects/node_modules/@types/pg/index.d.ts', result '/src/projects/node_modules/@types/pg/index.d.ts'.
+======== Type reference directive 'pg' was successfully resolved to '/src/projects/node_modules/@types/pg/index.d.ts', primary: true. ========
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist.
+lib/lib.es2022.full.d.ts
+  Default library for target 'es2022'
+src/projects/node_modules/@types/pg/index.d.ts
+  Imported via "pg" from file 'src/projects/b/src/index.ts'
+  Entry point for implicit type library 'pg'
+  File is CommonJS module because 'src/projects/node_modules/@types/pg/package.json' does not have field "type"
+src/projects/b/src/index.ts
+  Matched by default include pattern '**/*'
+  File is ECMAScript module because 'src/projects/b/package.json' has field "type" with value "module"
+exitCode:: ExitStatus.Success
+
+
+//// [/src/projects/a/src/index.js]
+"use strict";
+
+
+//// [/src/projects/b/src/index.js]
+import pg from "pg";
+pg.foo();
+
+
+
+
+Change:: no-change-run
+Input::
+
+
+Output::
+/lib/tsc -b /src/projects/a /src/projects/b --verbose --traceResolution --explainFiles
+[12:00:29 AM] Projects in this build: 
+    * src/projects/a/tsconfig.json
+    * src/projects/b/tsconfig.json
+
+[12:00:30 AM] Project 'src/projects/a/tsconfig.json' is up to date because newest input 'src/projects/a/src/index.ts' is older than output 'src/projects/a/src/index.js'
+
+[12:00:31 AM] Project 'src/projects/b/tsconfig.json' is up to date because newest input 'src/projects/b/src/index.ts' is older than output 'src/projects/b/src/index.js'
+
+exitCode:: ExitStatus.Success
+
+