据当时彭博社报道，Meta 开价超过 2 亿美元，横跨数年，大头是股票和签约奖金，且需完成特定里程碑才能全部兑现。知情人士透露，为了让庞若鸣放弃苹果团队以及过往在 Google 积累的资源，Meta 还为他量身定制了一套补偿机制。
The entire pipeline executes in a single call stack. No promises are created, no microtask queue scheduling occurs, and no GC pressure from short-lived async machinery. For CPU-bound workloads like parsing, compression, or transformation of in-memory data, this can be significantly faster than the equivalent Web streams code — which would force async boundaries even when every component is synchronous.
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SSIM (Structural Similarity Index Measure) compares two images by evaluating luminance, contrast, and structural patterns across local windows. It returns a score from -1 to 1: 1.0 means the images are pixel-identical, 0 means no structural correlation, and negative values mean the images are anti-correlated (less alike than random noise). For glyph comparison, it answers the question: do these two rendered characters share the same visual structure?