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- 'use strict'
-
- var codes = require('../character/codes.js')
- var values = require('../character/values.js')
- var fromCharCode = require('../constant/from-char-code.js')
-
- function safeFromInt(value, base) {
- var code = parseInt(value, base)
-
- if (
- // C0 except for HT, LF, FF, CR, space
- code < codes.ht ||
- code === codes.vt ||
- (code > codes.cr && code < codes.space) ||
- // Control character (DEL) of the basic block and C1 controls.
- (code > codes.tilde && code < 160) ||
- // Lone high surrogates and low surrogates.
- (code > 55295 && code < 57344) ||
- // Noncharacters.
- (code > 64975 && code < 65008) ||
- (code & 65535) === 65535 ||
- (code & 65535) === 65534 ||
- // Out of range
- code > 1114111
- ) {
- return values.replacementCharacter
- }
-
- return fromCharCode(code)
- }
-
- module.exports = safeFromInt
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