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| function λ(strings, ...args) { | |
| const splat = strings.raw[0].split('_') | |
| let buf = '', table = {} | |
| for (let i = 0; i < splat.length - 1; i++) { | |
| const varName = '___' + i | |
| buf += splat[i] + varName | |
| table[varName] = args[i] | |
| } | |
| buf += splat[splat.length - 1] | |
| const keys = Object.keys(table) | |
| return new (Function.prototype.bind.apply(Function, [null, ...keys, 'return ' + buf])) | |
| } | |
| /* | |
| > λ`(_ + _) * _`(4, 2, 7) | |
| 42 | |
| > [{x: 'foo'}, {x: true}, {x: 3}].map(λ`_.x`) | |
| ["foo", true, 3] | |
| */ |
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can we make this safer by making it type-safe with typescript?