feat: implement config.define (#1297)

This implements `config.define`. This lets the user define a map of keys to strings that will be substituted in the worker's source. This is particularly useful when combined with environments. A common usecase is for values that are sent along with metrics events; environment name, public keys, version numbers, etc. It's also sometimes a runaround for module env vars, which otherwise have to be threaded through request function stacks.
cloudflare · Jun 28, 2022 · 40036e2 · 40036e2
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diff --git a/.changeset/swift-bobcats-joke.md b/.changeset/swift-bobcats-joke.md
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+---
+"wrangler": patch
+---
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+feat: implement `config.define`
+
+This implements `config.define`. This lets the user define a map of keys to strings that will be substituted in the worker's source. This is particularly useful when combined with environments. A common usecase is for values that are sent along with metrics events; environment name, public keys, version numbers, etc. It's also sometimes a workaround for the usability of module env vars, which otherwise have to be threaded through request function stacks.