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[ID-Prep] PR4 - Preserve types nodes from type assertions in declaration emit #57589

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[ID-Prep] PR4 - Preserve types nodes from type assertions in declaration emit #57589

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297ba1b
Added tests for using type from assertion in declarations.
dragomirtitian Feb 27, 2024
9399b32
Allow extraction of type from type assertions for declaration emit
dragomirtitian Feb 29, 2024
4f63418
Accessor declared type was not visited
dragomirtitian Mar 1, 2024
c84eeb0
Merge remote-tracking branch 'remotes/origin/main' into ts-verbatim-d…
dragomirtitian Mar 3, 2024
3833bf5
Incorporated feedback
dragomirtitian Mar 5, 2024
5506934
Infer type from assertion for export assignment.
dragomirtitian Mar 5, 2024
83c3715
Added test for JS assertions (not affected)
dragomirtitian Mar 6, 2024
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237 changes: 202 additions & 35 deletions src/compiler/transformers/declarations.ts
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14 changes: 13 additions & 1 deletion src/compiler/transformers/declarations/diagnostics.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import {
DiagnosticMessage,
Diagnostics,
ElementAccessExpression,
ExportAssignment,
ExpressionWithTypeArguments,
FunctionDeclaration,
GetAccessorDeclaration,
Expand All @@ -24,6 +25,7 @@ import {
isConstructorDeclaration,
isConstructSignatureDeclaration,
isElementAccessExpression,
isExportAssignment,
isExpressionWithTypeArguments,
isFunctionDeclaration,
isGetAccessor,
Expand Down Expand Up @@ -100,7 +102,8 @@ export type DeclarationDiagnosticProducing =
| BinaryExpression
| JSDocTypedefTag
| JSDocCallbackTag
| JSDocEnumTag;
| JSDocEnumTag
| ExportAssignment;

/** @internal */
export function canProduceDiagnostics(node: Node): node is DeclarationDiagnosticProducing {
Expand Down Expand Up @@ -231,9 +234,18 @@ export function createGetSymbolAccessibilityDiagnosticForNode(node: DeclarationD
else if (isTypeAliasDeclaration(node) || isJSDocTypeAlias(node)) {
return getTypeAliasDeclarationVisibilityError;
}
else if (isExportAssignment(node)) {
return getExportAssignmentTypeVisibilityDiagnosticMessage;
}
else {
return Debug.assertNever(node, `Attempted to set a declaration diagnostic context for unhandled node kind: ${Debug.formatSyntaxKind((node as Node).kind)}`);
}
function getExportAssignmentTypeVisibilityDiagnosticMessage() {
return {
diagnosticMessage: Diagnostics.Default_export_of_the_module_has_or_is_using_private_name_0,
errorNode: node,
};
}

function getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccessibilityResult: SymbolAccessibilityResult) {
if (node.kind === SyntaxKind.VariableDeclaration || node.kind === SyntaxKind.BindingElement) {
Expand Down
4 changes: 2 additions & 2 deletions tests/baselines/reference/coAndContraVariantInferences.js
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Expand Up @@ -70,7 +70,7 @@ interface Action<TName extends string, TPayload> {
name: TName;
payload: TPayload;
}
declare const actionA: Action<"ACTION_A", string>;
declare const actionB: Action<"ACTION_B", boolean>;
declare const actionA: Action<'ACTION_A', string>;
declare const actionB: Action<'ACTION_B', boolean>;
declare function call<TName extends string, TPayload>(action: Action<TName, TPayload>, fn: (action: Action<TName, TPayload>) => any): void;
declare const printFn: (action: typeof actionA | typeof actionB) => void;
1 change: 1 addition & 0 deletions tests/baselines/reference/duplicatePropertiesInTypeAssertions01.js
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Expand Up @@ -10,4 +10,5 @@ var x = {};
//// [duplicatePropertiesInTypeAssertions01.d.ts]
declare let x: {
a: number;
a: number;
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};
1 change: 1 addition & 0 deletions tests/baselines/reference/duplicatePropertiesInTypeAssertions02.js
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Expand Up @@ -10,4 +10,5 @@ var x = {};
//// [duplicatePropertiesInTypeAssertions02.d.ts]
declare let x: {
a: number;
a: number;
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};
2 changes: 1 addition & 1 deletion tests/baselines/reference/hugeDeclarationOutputGetsTruncatedWithError.errors.txt
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Expand Up @@ -6,6 +6,6 @@ hugeDeclarationOutputGetsTruncatedWithError.ts(5,14): error TS7056: The inferred

type manyprops = `${props}${props}`;

export const c = null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};
export const c = () => null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};
~
!!! error TS7056: The inferred type of this node exceeds the maximum length the compiler will serialize. An explicit type annotation is needed.
5 changes: 3 additions & 2 deletions tests/baselines/reference/hugeDeclarationOutputGetsTruncatedWithError.js
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Expand Up @@ -5,10 +5,11 @@ type props = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "

type manyprops = `${props}${props}`;

export const c = null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};
export const c = () => null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};

//// [hugeDeclarationOutputGetsTruncatedWithError.js]
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.c = void 0;
exports.c = null;
var c = function () { return null; };
exports.c = c;
10 changes: 5 additions & 5 deletions tests/baselines/reference/hugeDeclarationOutputGetsTruncatedWithError.symbols
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Expand Up @@ -9,12 +9,12 @@ type manyprops = `${props}${props}`;
>props : Symbol(props, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 0, 0))
>props : Symbol(props, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 0, 0))

export const c = null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};
export const c = () => null as any as {[K in manyprops]: {[K2 in manyprops]: `${K}.${K2}`}};
>c : Symbol(c, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 12))
>K : Symbol(K, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 34))
>K : Symbol(K, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 40))
>manyprops : Symbol(manyprops, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 0, 167))
>K2 : Symbol(K2, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 53))
>K2 : Symbol(K2, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 59))
>manyprops : Symbol(manyprops, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 0, 167))
>K : Symbol(K, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 34))
>K2 : Symbol(K2, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 53))
>K : Symbol(K, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 40))
>K2 : Symbol(K2, Decl(hugeDeclarationOutputGetsTruncatedWithError.ts, 4, 59))

5 changes: 3 additions & 2 deletions tests/baselines/reference/hugeDeclarationOutputGetsTruncatedWithError.types
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2 changes: 1 addition & 1 deletion tests/baselines/reference/namedTupleMembers.js
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Expand Up @@ -133,7 +133,7 @@ export declare const func: Func<SegmentAnnotated>;
export declare function useState<T>(initial: T): [value: T, setter: (T: any) => void];
export type Iter = Func<[step: number, iterations: number]>;
export declare function readSegment([length, count]: [number, number]): void;
export declare const val: [number, number];
export declare const val: Parameters<typeof readSegment>[0];
export type RecursiveTupleA = [initial: string, next: RecursiveTupleA];
export type RecursiveTupleB = [first: string, ptr: RecursiveTupleB];
export type RecusiveRest = [first: string, ...rest: RecusiveRest[]];
Expand Down
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