Can I use
?

Shared Array Buffer

- OTHER

Type of ArrayBuffer that can be shared across Workers.

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 15: Not supported
  2. 16 - 18: Disabled by default
  3. 79 - 85: Supported
  4. 86: Supported

Firefox

  1. 2 - 56: Not supported
  2. 57 - 73: Disabled by default
  3. 74 - 78: Disabled by default
  4. 79 - 80: Supported
  5. 81: Supported
  6. 82 - 83: Supported

Chrome

  1. 4 - 59: Not supported
  2. 60 - 67: Disabled by default
  3. 68 - 85: Supported
  4. 86: Supported
  5. 87 - 89: Supported

Safari

  1. 3.1 - 10: Not supported
  2. 10.1 - 13.1: Disabled by default
  3. 14: Disabled by default
  4. TP: Disabled by default

Opera

  1. 9 - 46: Not supported
  2. 47 - 63: Disabled by default
  3. 64 - 70: Supported
  4. 71: Supported

iOS Safari

  1. 3.2 - 10.2: Not supported
  2. 10.3 - 13.7: Disabled by default
  3. 14: Disabled by default

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Not supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Not supported

Chrome for Android

  1. 85: Disabled by default

Firefox for Android

  1. 79: Supported

IE Mobile

  1. 10: Not supported
  2. 11: Not supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 11.2: Not supported
  2. 12.0: Not supported

QQ Browser

  1. 10.4: Not supported

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Not supported
Resources:
MDN article
Mozilla Hacks article on safely reviving shared memory