25 lines
1.2 KiB
TypeScript
25 lines
1.2 KiB
TypeScript
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import * as ts from 'typescript';
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export declare function endsControlFlow(statement: ts.Statement | ts.BlockLike, checker?: ts.TypeChecker): boolean;
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export declare type ControlFlowStatement = ts.BreakStatement | ts.ContinueStatement | ts.ReturnStatement | ts.ThrowStatement | ts.ExpressionStatement & {
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expression: ts.CallExpression;
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};
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export interface ControlFlowEnd {
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/**
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* Statements that may end control flow at this statement.
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* Does not contain control flow statements that jump only inside the statement, for example a `continue` inside a nested for loop.
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*/
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readonly statements: ReadonlyArray<ControlFlowStatement>;
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/** `true` if control flow definitely ends. */
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readonly end: boolean;
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}
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export declare function getControlFlowEnd(statement: ts.Statement | ts.BlockLike, checker?: ts.TypeChecker): ControlFlowEnd;
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export declare enum SignatureEffect {
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Never = 1,
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Asserts = 2
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}
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/**
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* Dermines whether a top level CallExpression has a control flow effect according to TypeScript's rules.
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* This handles functions returning `never` and `asserts`.
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*/
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export declare function callExpressionAffectsControlFlow(node: ts.CallExpression, checker: ts.TypeChecker): SignatureEffect | undefined;
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