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| const unicode = require('../lib/unicode') | |
| module.exports = { | |
| isSpaceSeparator (c) { | |
| return typeof c === 'string' && unicode.Space_Separator.test(c) | |
| }, | |
| isIdStartChar (c) { | |
| return typeof c === 'string' && ( | |
| (c >= 'a' && c <= 'z') || | |
| (c >= 'A' && c <= 'Z') || | |
| (c === '$') || (c === '_') || | |
| unicode.ID_Start.test(c) | |
| ) | |
| }, | |
| isIdContinueChar (c) { | |
| return typeof c === 'string' && ( | |
| (c >= 'a' && c <= 'z') || | |
| (c >= 'A' && c <= 'Z') || | |
| (c >= '0' && c <= '9') || | |
| (c === '$') || (c === '_') || | |
| (c === '\u200C') || (c === '\u200D') || | |
| unicode.ID_Continue.test(c) | |
| ) | |
| }, | |
| isDigit (c) { | |
| return typeof c === 'string' && /[0-9]/.test(c) | |
| }, | |
| isHexDigit (c) { | |
| return typeof c === 'string' && /[0-9A-Fa-f]/.test(c) | |
| }, | |
| } | |