• littledan's avatar
    ES2015 web compat workaround: RegExp.prototype.flags => "" · b22b2588
    littledan authored
    It turns out that some old polyfill library uses
    RegExp.prototype.flags as a way of feature testing. It's not clear
    how widespread this is. For now, as a minimal workaround, we can
    return undefined from getters like RegExp.prototype.global when
    the receiver is RegExp.prototype. This patch implements that strategy
    but omits a UseCounter to make backports easier.
    
    R=adamk
    CC=yangguo@chromium.org
    BUG=chromium:581577
    LOG=Y
    CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
    
    Review URL: https://codereview.chromium.org/1640803003
    
    Cr-Commit-Position: refs/heads/master@{#34201}
    b22b2588
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