27 lines
874 B
JavaScript
27 lines
874 B
JavaScript
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const TEXT_ENCODER = typeof TextEncoder == "function" ? new TextEncoder() : null;
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export const calculateBodyLength = (body) => {
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if (typeof body === "string") {
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if (TEXT_ENCODER) {
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return TEXT_ENCODER.encode(body).byteLength;
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}
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let len = body.length;
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for (let i = len - 1; i >= 0; i--) {
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const code = body.charCodeAt(i);
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if (code > 0x7f && code <= 0x7ff)
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len++;
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else if (code > 0x7ff && code <= 0xffff)
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len += 2;
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if (code >= 0xdc00 && code <= 0xdfff)
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i--;
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}
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return len;
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}
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else if (typeof body.byteLength === "number") {
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return body.byteLength;
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}
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else if (typeof body.size === "number") {
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return body.size;
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}
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throw new Error(`Body Length computation failed for ${body}`);
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};
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