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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)
- },
- }
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