Update JSX intrinsic element test to match babel’s #19946
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RyanCavanaugh
approved these changes
Nov 12, 2017
RyanCavanaugh
requested changes
Nov 12, 2017
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@RyanCavanaugh updated, thanks! |
mhegazy
reviewed
Nov 13, 2017
| // An escaped identifier had a leading underscore prior to being escaped, which would return true | ||
| // The escape adds an extra underscore which does not change the result | ||
| const ch = (name as string).substr(0, 1); | ||
| return ch.toLowerCase() === ch; |
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ch.toLowerCase() === ch || ch === "_" ?
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aah.. that is the opposite.. sorry..
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const ch = (name as string).charCodeAt(0);
return (ch >= CharacterCodes.a && ch <= CharacterCodes.z) ||
ch == CharacterCodes._ ||
(name as string).indexof("-") > 0;There was a problem hiding this comment.
and avoid the creation of a regexp on every invocation.
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@mhegazy good catch, thanks!
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oops, missed the comment before. Updating…
RyanCavanaugh
approved these changes
Nov 14, 2017
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This PR changes the intrinsic element check in src/compiler/utilities.ts#L2436 to use babel’s instead.
Fixes #19945
Babel’s JSXElement name test: babel-types/src/react.js#L5-L7
This PR undoes some of the changes added by #16915 and makes the
doubleUnderscoreReactNamespacetest redundant. Might be good to get input from @weswigham (?)