Make tokenToString return string|undefined#16106
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mhegazy
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May 30, 2017
| const tokenStrings = makeReverseMap(textToToken); | ||
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| export function tokenToString(t: SyntaxKind): string { | ||
| export function tokenToString(t: SyntaxKind): string | undefined { |
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why would it return undefined?
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If you pass a SyntaxKind of a Node. And even if you only pass SyntaxKind of Tokens, you get undefined for example for StringLiteral, NumericLiteral, etc.
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Makes the
tokenToStringAPI compatible with strictNullChecks