Pattern Matching #22
Pattern Matching #22
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| @@ -11,6 +11,27 @@ export const lightscriptImports = { | |||
| "bitwiseZeroFillRightShift": "inline", | |||
| }; | |||
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| export const runtimeHelpers = { | |||
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I liked this way of doing helpers a lot, so I tried to adopt it. When I applied it to my local build of lscdiag I got some very strange code output in the generated helpers. Took me a while to figure out why -- turns out that minifiers mangle these things and then fn.toString() brings in the minified code.
We could just say we don't care about that, but I think live compilers and minifiers are good things generally, whereas this, while neat, could just be replaced with a plain string passed to babel-template. I recommend the latter approach.
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ah, yeah, that's why. I kind of don't mind – it's babel helping make sure that I'm writing cross-browser code. But yes, if you see the tests, the output isn't the exact same as what I wrote.
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This doesn't sound quite right... the transform being run here is just the one specified in .babelrc for the plugin, which is just env: { node: 4 } -- that's definitely not cross browser code.
I think having cross-browser code is a good point, but might be better to paste the helper into babel-repl, set the env to Netscape Navigator 1.0, and paste the output into a plain string.
Alternatively, an extra build step could compile the helpers with a different env? But that seems like overtooling.
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My current implementation of hasProps and hasLength doesn't change due to this factor, which I think is desirable, so I think I'll leave this as-is for now, hope that's ok
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Sorry, I hadn't read that comment very carefully – I did check in the babel repl that with an ie<6 target the output doesn't change
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(travis is failing because the parser has not yet merged) |
builds on parser PR at lightscript/babylon-lightscript#17