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improve(media): speed up image result size estimation (#146506)

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Peter Steinberger 2026-09-12 15:08:33 -07:00 • committed by GitHub
parent 5720083cbd
commit faffc7fea9
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1 changed files with 8 additions and 7 deletions
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15
packages/media-core/src/base64.ts
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@ -2,14 +2,15 @@
export function estimateBase64DecodedBytes(base64: string): number {
// Avoid `trim()`/`replace()` here: they allocate a second (potentially huge) string.
// We only need a conservative decoded-size estimate to enforce budgets before Buffer.from(..., "base64").
let effectiveLen = 0;
for (let i = 0; i < base64.length; i += 1) {
const code = base64.charCodeAt(i);
// Treat ASCII control + space as whitespace; base64 decoders commonly ignore these.
if (code <= 0x20) {
continue;
let effectiveLen = base64.length;
// oxlint-disable-next-line eslint/no-control-regex -- Preserve the estimator's ASCII control and space handling.
const firstWhitespace = base64.search(/[\x00-\x20]/);
if (firstWhitespace !== -1) {
for (let i = firstWhitespace; i < base64.length; i += 1) {
if (base64.charCodeAt(i) <= 0x20) {
effectiveLen -= 1;
}
}
effectiveLen += 1;
}
if (effectiveLen === 0) {