8 lines
15 KiB
Text
8 lines
15 KiB
Text
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{
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"version": 3,
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"sources": ["src/buffer.js", "src/lowlevel.js", "src/shared.js", "src/support.js", "src/o-encoder.js", "src/xhr.js", "src/o-decoder.js", "src/polyfill.js"],
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"sourcesContent": ["\n/**\n * @param {Uint8Array} bytes\n * @param {string} encoding\n * @return {string}\n */\nexport function decodeBuffer(bytes, encoding) {\n /** @type {Buffer} */\n var b;\n if (bytes instanceof Buffer) {\n // @ts-ignore\n b = bytes;\n } else {\n b = Buffer.from(bytes.buffer, bytes.byteOffset, bytes.byteLength);\n }\n return b.toString(/** @type {BufferEncoding} */(encoding));\n}\n\n\n/**\n * @param {string} string\n * @return {Uint8Array}\n */\nexport var encodeBuffer = (string) => Buffer.from(string);\n", "\n/**\n * @param {Uint8Array} bytes\n * @return {string}\n */\nexport function decodeFallback(bytes) {\n var inputIndex = 0;\n\n // Create a working buffer for UTF-16 code points, but don't generate one\n // which is too large for small input sizes. UTF-8 to UCS-16 conversion is\n // going to be at most 1:1, if all code points are ASCII. The other extreme\n // is 4-byte UTF-8, which results in two UCS-16 points, but this is still 50%\n // fewer entries in the output.\n var pendingSize = Math.min(256 * 256, bytes.length + 1);\n var pending = new Uint16Array(pendingSize);\n var chunks = [];\n var pendingIndex = 0;\n\n for (; ;) {\n var more = inputIndex < bytes.length;\n\n // If there's no more data or there'd be no room for two UTF-16 values,\n // create a chunk. This isn't done at the end by simply slicing the data\n // into equal sized chunks as we might hit a surrogate pair.\n if (!more || (pendingIndex >= pendingSize - 1)) {\n // nb. .apply and friends are *really slow*. Low-hanging fruit is to\n // expand this to literally pass pending[0], pending[1], ... etc, but\n // the output code expands pretty fast in this case.\n // These extra vars get compiled out: they're just to make TS happy.\n // Turns out you can pass an ArrayLike to .apply().\n var subarray = pending.subarray(0, pendingIndex);\n var arraylike = /** @type {number[]} */ (/** @type {unknown} */ (subarray));\n chunks.push(String.fromCharCode.apply(null, arraylike));\n\n if (!more) {\n return chunks.join('');\n }\n\n // Move the buffer forward and create another chunk.\n bytes = bytes.subarray(inputIndex);\n inputIndex = 0;\n pendingIndex = 0;\n }\n\n // The native TextDecoder will generate \"REPLACEMENT CHARACTER\" where the\n // input data is invalid. Here, we blindly parse the data even if it's\n // wrong: e.g., if a 3-byte sequence doesn't have two valid continuations.\n\n var byte1 = bytes[inputIndex++];\n if ((byte1 & 0x80) === 0) { // 1-byte or null\n pending[pendingIndex++] = byte1;\n } else if ((byte1 & 0xe0) === 0xc0) { // 2-byte\n var byte2 = bytes[inputIndex++] & 0x3f;\n pending[pendingIndex++] = ((byte1 & 0x1f) << 6) | byte2;\n } else if ((byte1 & 0xf0) === 0xe0) { // 3-byte\n var byte2 = bytes[inputIndex++] & 0x3f;\n var byte3 = bytes[inputIndex++] & 0x3f;\n pending[pendingIndex++] = ((byte1 & 0x1f) << 12) | (byte2 << 6) | byte3;\n } else if ((byte1 & 0xf8) === 0xf0) { // 4-byte\n var byte2 = bytes[inputIndex++] & 0x3f;\n var byte3 = bytes[inputIndex++] & 0x3f;\n var byte4 = bytes[inputIndex++] & 0x3f;\n\n // this can be > 0xffff, so possibly generate surrogates\n var codepoint = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0c) | (byte3 << 0x06) | byte4;\n if (codepoint > 0xffff) {\n // codepoint &= ~0x10000;\n codepoint -= 0x10000;\n pending[pendingIndex++] = (codepoint >>> 10) & 0x3ff | 0xd800;\n codepoint = 0xdc00 | codepoint & 0x3ff;\n }\n pending[pendingIndex++] = codepoint;\n } else {\n // invalid initial byte\n }\n }\n}\n\n\n/**\n * @param {string} string\n * @return {Uint8Array}\n */\nexport function encodeFallback(string) {\n var pos = 0;\n var len = string.length;\n\n var at = 0; // output position\n var tlen = Math.max(32, len + (len >>> 1) + 7); // 1.5x size\n var target = new Uint8Array((tlen >>> 3) << 3); // ... but at 8 byte offset\n\n while (p
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"names": ["decodeBuffer", "bytes", "encoding", "b", "encodeBuffer", "string", "decodeFallback", "bytes", "inputIndex", "pendingSize", "pending", "chunks", "pendingIndex", "more", "subarray", "arraylike", "byte1", "byte2", "byte3", "byte4", "codepoint", "encodeFallback", "string", "pos", "len", "at", "tlen", "target", "value", "extra", "update", "failedToString", "maybeThrowFailedToOption", "check", "operation", "fieldName", "hasBufferFrom", "encodeImpl", "hasBufferFrom", "encodeFallback", "encodeBuffer", "FastTextEncoder", "string", "options", "maybeThrowFailedToOption", "decodeSyncXHR", "bytes", "u", "b", "x", "trySyncXHR", "hasBufferFrom", "validUtfLabels", "decodeImpl", "decodeFallback", "decodeBuffer", "string", "decodeSyncXHR", "ctorString", "errorPrefix", "failedToString", "FastTextDecoder", "utfLabel", "options", "maybeThrowFailedToOption", "ok", "buffer", "bytes", "FastTextEncoder", "FastTextDecoder"]
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}
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