28 lines
954 B
JavaScript
28 lines
954 B
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const commons_js_1 = require("./commons.js");
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const encodePacket = ({ type, data }, supportsBinary, callback) => {
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if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
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const buffer = toBuffer(data);
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return callback(encodeBuffer(buffer, supportsBinary));
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}
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// plain string
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return callback(commons_js_1.PACKET_TYPES[type] + (data || ""));
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};
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const toBuffer = data => {
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if (Buffer.isBuffer(data)) {
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return data;
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}
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else if (data instanceof ArrayBuffer) {
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return Buffer.from(data);
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}
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else {
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return Buffer.from(data.buffer, data.byteOffset, data.byteLength);
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}
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};
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// only 'message' packets can contain binary, so the type prefix is not needed
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const encodeBuffer = (data, supportsBinary) => {
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return supportsBinary ? data : "b" + data.toString("base64");
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};
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exports.default = encodePacket;
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