15.2.3.8 Object.seal(O) and 15.2.3.9 Object.freeze(O) both end with the qualification
The above algorithm is specified as a set of sequential steps that include > the possibility of a exception > being thrown as various intermediate points. Rather than failing after a > partial update of O, this > function must be implemented such that it either atomically completes all > property updates > successfully or fails without making any update to the properties of object > O. AFAICT, the algorithm specified for these two operations can't fail, so these qualifications may not be necessary. -- Cheers, --MarkM
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