thunderstrike/puppeteer
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Eric Bidelman 2017-06-20 10:33:21 -07:00 committed by Pavel Feldman
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@ -99,9 +99,8 @@ browser.newPage().then(async page => {
#### Q: What is the "Phantom Shim"?
"Phantom Shim" is a layer built atop the Puppeteer API that simulates Phantom's environment.
It was developed to run Phantom's tests and estimate the comprehensiveness Puppeteer's API.
At the moment, the shim employs unhealthy approaches (e.g. in-process code execution is emulated via [nested event loops](https://github.com/abbr/deasync)) to mimic Phantom's environment.
Puppeteer's process model is different than Phantom's. Puppeteer runs out-of-process to the browser, whereas Phantom runs in-process. To simulate in-process behavior, phantom_shim hacks Node's runtime with [nested event loops](https://github.com/abbr/deasync)) to simulate in-process operation. This might result in unpredictable side-effects and makes the shim unreliable for certain use cases situations.
# Migration Guide