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morlutoandCursor Agent
249b90c5e3
* refactor(javascript): break the semantic analysis import cycle Split shared semantic facts out of the analysis hub so projectors of effects, evaluation, and identity no longer import one another in a cycle. * refactor(javascript): share the import specifier reader Read static imports in one module used by the boundary checker and both cycle guards, so those rules cannot drift apart. --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com>
43 lines
1.2 KiB
TypeScript
43 lines
1.2 KiB
TypeScript
import * as t from "@babel/types";
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import {
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semanticStaticPropertyKey,
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unwrapJavaScriptExpression,
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} from "./javascriptAstValues.js";
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import { isUnmodifiedGlobalReference } from "./javascriptSemanticGlobalReference.js";
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import type { JavaScriptSemanticAnalysisState } from "./javascriptSemanticState.js";
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// These intrinsic properties hold symbols, so ToPropertyKey cannot produce a
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// string slot. Visible replacement of Symbol/the selected property voids proof.
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const wellKnownSymbols = new Set([
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"asyncIterator",
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"hasInstance",
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"isConcatSpreadable",
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"iterator",
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"match",
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"matchAll",
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"replace",
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"search",
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"species",
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"split",
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"toPrimitive",
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"toStringTag",
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"unscopables",
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"dispose",
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"asyncDispose",
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]);
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/** A proved symbol key cannot shadow a selected string property. */
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export const semanticKnownSymbolKey = (
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node: t.Node,
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state: JavaScriptSemanticAnalysisState,
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): boolean => {
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const key = unwrapJavaScriptExpression(node).node;
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if (!t.isMemberExpression(key)) return false;
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const name = semanticStaticPropertyKey(key.property, key.computed);
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return (
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name !== null &&
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wellKnownSymbols.has(name) &&
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isUnmodifiedGlobalReference(key, state, ["Symbol", name])
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);
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};
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