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Fix mapping of tokens with generated nodes in between #16948

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merged 2 commits into from
Oct 30, 2024
Merged

Fix mapping of tokens with generated nodes in between #16948

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eb56e81
Add test for current wrong behavior
nicolo-ribaudo Oct 30, 2024
9fab039
Fix mapping of tokens with generated nodes in between
nicolo-ribaudo Oct 30, 2024
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Fix mapping of tokens with generated nodes in between
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@nicolo-ribaudo
nicolo-ribaudo committed Oct 30, 2024
commit 9fab039ba5efbdbefc218ba3ef595297a1529717
3 changes: 2 additions & 1 deletion packages/babel-generator/src/token-map.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -158,7 +158,8 @@ export class TokenMap {
const indexes = [];

for (const child of children) {
if (!child) continue;
if (child == null) continue;
if (child.start == null || child.end == null) continue;
Comment on lines +161 to +162
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Suggested change
if (child == null) continue;
if (child.start == null || child.end == null) continue;
if (child == null || child.start == null || child.end == null) continue;

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Heheh unfortunately typescript-eslint complains that child == null || child.start == null should be rewritten to child?.start == null, but I find child?.start == null || child.end == null to be terrible so this two-lines solution was the compromise I reached with the linter :P


const childTok = this._findTokensOfNode(child, low, last);

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4 changes: 2 additions & 2 deletions packages/babel-generator/test/preserve-format.js
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Expand Up @@ -215,8 +215,8 @@ describe("experimental_preserveFormat", () => {
const expected = `
const foo
= 3;hello;
const bar=
3
const bar =
3;
bax
`;

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