essupernext
Version:
ES2018 a.k.a. "ESSuper-Next". Dot-syntax and keyword conversion.
98 lines (77 loc) • 1.76 kB
JavaScript
const INDEXES = {
RAW: 0,
SINGLE_STRING: 1,
DOUBLE_STRING: 2,
CONST: 3,
FUNCTION: 4,
VAR: 5,
LET: 6,
MATH: 7,
CONSOLE: 8,
RETURN: 9,
MODULE: 10,
BUFFER: 11,
ERROR: 12,
DOT: 13,
BREAK: 14,
PLAIN: 15
}
function essupernext (data) {
const re = /('.+?[^\\]')|(".+[^\\]")|(const)|(function)|(var)|(let)|(Math)|(console)|(return)|(module)|(Buffer)|(Error)|([=\(\)\[\]\{\}\;\,\>\<])|(\n)|(.)/gm
let match
let ret = ''
while ((match = re.exec(data)) !== null) {
if (match.index === re.lastIndex) {
re.lastIndex++
}
switch (true) {
case !!match[INDEXES.PLAIN]:
ret += match[INDEXES.PLAIN]
break
case !!match[INDEXES.SINGLE_STRING]:
ret += match[INDEXES.SINGLE_STRING]
break
case !!match[INDEXES.DOUBLE_STRING]:
ret += match[INDEXES.DOUBLE_STRING]
break
case !!match[INDEXES.CONST]:
ret += 'c'
break
case !!match[INDEXES.FUNCTION]:
ret += 'f'
break
case !!match[INDEXES.VAR]:
ret += 'v'
break
case !!match[INDEXES.LET]:
ret += 'l'
break
case !!match[INDEXES.MATH]:
ret += 'M'
break
case !!match[INDEXES.CONSOLE]:
ret += 'c'
break
case !!match[INDEXES.RETURN]:
ret += 'r'
break
case !!match[INDEXES.MODULE]:
ret += 'm'
break
case !!match[INDEXES.BUFFER]:
ret += 'B'
break
case !!match[INDEXES.ERROR]:
ret += 'E'
break
case !!match[INDEXES.DOT]:
ret += '.'
break
case !!match[INDEXES.BREAK]:
ret += '\n'
break
}
}
return ret
}
module.exports = essupernext