Fix bug for isValidTrigger when contextToken is undefined (#25993)
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@ -42,7 +42,7 @@ namespace ts.Completions {
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}
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const contextToken = findPrecedingToken(position, sourceFile);
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if (triggerCharacter && !isValidTrigger(sourceFile, triggerCharacter, contextToken!, position)) return undefined; // TODO: GH#18217
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if (triggerCharacter && (!contextToken || !isValidTrigger(sourceFile, triggerCharacter, contextToken, position))) return undefined;
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if (isInString(sourceFile, position, contextToken)) {
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return !contextToken || !isStringLiteralLike(contextToken)
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@ -2,6 +2,7 @@
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// @jsx: preserve
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//////</*comment*/
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////const x: "a" | "b" = "/*openQuote*/"/*closeQuote*/;
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////const y: 'a' | 'b' = '/*openSingleQuote*/'/*closeSingleQuote*/;
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////const z: 'a' | 'b' = `/*openTemplate*/`/*closeTemplate*/;
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@ -28,6 +29,8 @@
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////const divide = 1 //*divide*/
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verify.completions(
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{ marker: "comment", exact: undefined, triggerCharacter: "<" },
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{ marker: "openQuote", exact: ["a", "b"], triggerCharacter: '"' },
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{ marker: "closeQuote", exact: undefined, triggerCharacter: '"' },
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