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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const fromCharCode = String.fromCharCode;
exports.default = (buf, start, length) => {
let offset = start;
const end = offset + length;
const points = [];
while (offset < end) {
let code = buf[offset++];
if ((code & 0x80) !== 0) {
const octet2 = buf[offset++] & 0x3f;
if ((code & 0xe0) === 0xc0) {
code = ((code & 0x1f) << 6) | octet2;
}
else {
const octet3 = buf[offset++] & 0x3f;
if ((code & 0xf0) === 0xe0) {
code = ((code & 0x1f) << 12) | (octet2 << 6) | octet3;
}
else {
if ((code & 0xf8) === 0xf0) {
const octet4 = buf[offset++] & 0x3f;
let unit = ((code & 0x07) << 0x12) | (octet2 << 0x0c) | (octet3 << 0x06) | octet4;
if (unit > 0xffff) {
unit -= 0x10000;
const unit0 = ((unit >>> 10) & 0x3ff) | 0xd800;
code = 0xdc00 | (unit & 0x3ff);
points.push(unit0);
}
else {
code = unit;
}
}
}
}
}
points.push(code);
}
return fromCharCode.apply(String, points);
};
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