Make sure to emit again if change in compiler option affects emit

Fixes #30736

src/compiler/commandLineParser.ts

@@ -281,6 +281,7 @@ namespace ts {
             name: "declaration",
             shortName: "d",
             type: "boolean",
+            affectsEmit: true,
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Generates_corresponding_d_ts_file,
@@ -288,6 +289,7 @@ namespace ts {
         {
             name: "declarationMap",
             type: "boolean",
+            affectsEmit: true,
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Generates_a_sourcemap_for_each_corresponding_d_ts_file,
@@ -295,12 +297,14 @@ namespace ts {
         {
             name: "emitDeclarationOnly",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Only_emit_d_ts_declaration_files,
         },
         {
             name: "sourceMap",
             type: "boolean",
+            affectsEmit: true,
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Generates_corresponding_map_file,
@@ -308,6 +312,7 @@ namespace ts {
         {
             name: "outFile",
             type: "string",
+            affectsEmit: true,
             isFilePath: true,
             paramType: Diagnostics.FILE,
             showInSimplifiedHelpView: true,
@@ -317,6 +322,7 @@ namespace ts {
         {
             name: "outDir",
             type: "string",
+            affectsEmit: true,
             isFilePath: true,
             paramType: Diagnostics.DIRECTORY,
             showInSimplifiedHelpView: true,
@@ -326,6 +332,7 @@ namespace ts {
         {
             name: "rootDir",
             type: "string",
+            affectsEmit: true,
             isFilePath: true,
             paramType: Diagnostics.LOCATION,
             category: Diagnostics.Basic_Options,
@@ -334,6 +341,7 @@ namespace ts {
         {
             name: "composite",
             type: "boolean",
+            affectsEmit: true,
             isTSConfigOnly: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Enable_project_compilation,
@@ -341,6 +349,7 @@ namespace ts {
         {
             name: "tsBuildInfoFile",
             type: "string",
+            affectsEmit: true,
             isFilePath: true,
             paramType: Diagnostics.FILE,
             category: Diagnostics.Basic_Options,
@@ -349,6 +358,7 @@ namespace ts {
         {
             name: "removeComments",
             type: "boolean",
+            affectsEmit: true,
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Do_not_emit_comments_to_output,
@@ -356,6 +366,7 @@ namespace ts {
         {
             name: "noEmit",
             type: "boolean",
+            affectsEmit: true,
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Do_not_emit_outputs,
@@ -363,12 +374,14 @@ namespace ts {
         {
             name: "importHelpers",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Import_emit_helpers_from_tslib
         },
         {
             name: "downlevelIteration",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Basic_Options,
             description: Diagnostics.Provide_full_support_for_iterables_in_for_of_spread_and_destructuring_when_targeting_ES5_or_ES3
         },
@@ -580,6 +593,7 @@ namespace ts {
         {
             name: "sourceRoot",
             type: "string",
+            affectsEmit: true,
             paramType: Diagnostics.LOCATION,
             category: Diagnostics.Source_Map_Options,
             description: Diagnostics.Specify_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations,
@@ -587,6 +601,7 @@ namespace ts {
         {
             name: "mapRoot",
             type: "string",
+            affectsEmit: true,
             paramType: Diagnostics.LOCATION,
             category: Diagnostics.Source_Map_Options,
             description: Diagnostics.Specify_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations,
@@ -594,12 +609,14 @@ namespace ts {
         {
             name: "inlineSourceMap",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Source_Map_Options,
             description: Diagnostics.Emit_a_single_file_with_source_maps_instead_of_having_a_separate_file
         },
         {
             name: "inlineSources",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Source_Map_Options,
             description: Diagnostics.Emit_the_source_alongside_the_sourcemaps_within_a_single_file_requires_inlineSourceMap_or_sourceMap_to_be_set
         },
@@ -635,6 +652,7 @@ namespace ts {
         {
             name: "out",
             type: "string",
+            affectsEmit: true,
             isFilePath: false, // This is intentionally broken to support compatability with existing tsconfig files
             // for correct behaviour, please use outFile
             category: Diagnostics.Advanced_Options,
@@ -644,6 +662,7 @@ namespace ts {
         {
             name: "reactNamespace",
             type: "string",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Deprecated_Use_jsxFactory_instead_Specify_the_object_invoked_for_createElement_when_targeting_react_JSX_emit
         },
@@ -662,6 +681,7 @@ namespace ts {
         {
             name: "emitBOM",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Emit_a_UTF_8_Byte_Order_Mark_BOM_in_the_beginning_of_output_files
         },
@@ -677,6 +697,7 @@ namespace ts {
                 crlf: NewLineKind.CarriageReturnLineFeed,
                 lf: NewLineKind.LineFeed
             }),
+            affectsEmit: true,
             paramType: Diagnostics.NEWLINE,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Specify_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix,
@@ -704,6 +725,7 @@ namespace ts {
         {
             name: "stripInternal",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Do_not_emit_declarations_for_code_that_has_an_internal_annotation,
         },
@@ -724,24 +746,28 @@ namespace ts {
         {
             name: "noEmitHelpers",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Do_not_generate_custom_helper_functions_like_extends_in_compiled_output
         },
         {
             name: "noEmitOnError",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Do_not_emit_outputs_if_any_errors_were_reported,
         },
         {
             name: "preserveConstEnums",
             type: "boolean",
+            affectsEmit: true,
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Do_not_erase_const_enum_declarations_in_generated_code
         },
         {
             name: "declarationDir",
             type: "string",
+            affectsEmit: true,
             isFilePath: true,
             paramType: Diagnostics.DIRECTORY,
             category: Diagnostics.Advanced_Options,
@@ -826,6 +852,10 @@ namespace ts {
     export const semanticDiagnosticsOptionDeclarations: ReadonlyArray<CommandLineOption> =
         optionDeclarations.filter(option => !!option.affectsSemanticDiagnostics);
 
+    /* @internal */
+    export const affectsEmitOptionDeclarations: ReadonlyArray<CommandLineOption> =
+        optionDeclarations.filter(option => !!option.affectsEmit);
+
     /* @internal */
     export const moduleResolutionOptionDeclarations: ReadonlyArray<CommandLineOption> =
         optionDeclarations.filter(option => !!option.affectsModuleResolution);