@arcblock/blocklet-registry/www/get_env_script.js

**Blocklets** are reusable building blocks to help developers and community users to build things on [ArcBlock](https://www.arcblock.io) platform. A blocklet serves one and only one purpose, reusability is the core design philosophy of blocklets. Reusabil

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  d.src = "/api/env.js?_t="+ now;
  d.type = "text/javascript";
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