fix(typescript): preserve necessary parens for TSOptionalType (#5056)
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ff4ef426e6
commit
461e6035c1
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@ -317,7 +317,8 @@ function needsParens(path, options) {
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parent.type === "TSTypeReference") &&
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(node.typeAnnotation.type === "TSTypeAnnotation" &&
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node.typeAnnotation.typeAnnotation.type !== "TSFunctionType" &&
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grandParent.type !== "TSTypeOperator")
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grandParent.type !== "TSTypeOperator" &&
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grandParent.type !== "TSOptionalType")
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) {
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return false;
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}
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@ -1,5 +1,12 @@
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// Jest Snapshot v1, https://goo.gl/fbAQLP
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exports[`complex.ts - typescript-verify 1`] = `
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type T = [("a" | "b")?];
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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type T = [("a" | "b")?];
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`;
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exports[`simple.ts - typescript-verify 1`] = `
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type X = [number, string?];
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -0,0 +1 @@
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type T = [("a" | "b")?];
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