Support supplementary CPs in Unicode identifiers #2522
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dcodeIO
commented
Sep 26, 2022
MaxGraey
reviewed
Sep 26, 2022
MaxGraey
reviewed
Sep 26, 2022
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| console.log(`const unicodeIdentifierStartMin = ${starts[0]};`); | ||
| console.log(`const unicodeIdentifierStartMax = ${starts[starts.length - 1]};\n`); |
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Suggested change
| console.log(`const unicodeIdentifierStartMin = ${starts[0]};`); | |
| console.log(`const unicodeIdentifierStartMax = ${starts[starts.length - 1]};\n`); | |
| console.log(`const UnicodeIdentifierStartMin = ${starts[0]};`); | |
| console.log(`const UnicodeIdentifierStartMax = ${starts[starts.length - 1]};\n`); |
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Using title case for SomeEnum.SomeValue seems fine, but just SomeValue conflicts visually with classes, enums and interfaces. Not sure it's preferable?
MaxGraey
reviewed
Sep 26, 2022
MaxGraey
reviewed
Sep 26, 2022
MaxGraey
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Sep 26, 2022
MaxGraey
reviewed
Sep 26, 2022
dcodeIO
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Showed up in #2495, where 4-byte Unicode characters are not accepted as identifier starts/parts by the tokenizer. In TS, there exist maps for ES3, ES5 and ESNext, and I assume our current one matches the ES5 one. This PR adds a script we can use to generate the tables for ESNext (respectively: current Unicode tables used by Node), which should be the only relevant maps for us.
On our end, the respective maps are here. For ESNext, we'll need to go from
u16tou32since these values are codepoints.