TanTan
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20 lines
821 B
Plaintext
20 lines
821 B
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getConstrainedTypeAtLocation = getConstrainedTypeAtLocation;
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/**
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* Resolves the given node's type. Will return the type's generic constraint, if it has one.
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*
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* Warning - if the type is generic and does _not_ have a constraint, the type will be
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* returned as-is, rather than returning an `unknown` type. This can be checked
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* for by checking for the type flag ts.TypeFlags.TypeParameter.
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*
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* @see https://github.com/typescript-eslint/typescript-eslint/issues/10438
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*/
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function getConstrainedTypeAtLocation(services, node) {
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const nodeType = services.getTypeAtLocation(node);
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const constrained = services.program
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.getTypeChecker()
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.getBaseConstraintOfType(nodeType);
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return constrained ?? nodeType;
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}
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