WIP - add extractor, generate snippet_data

node_modules/node-eta/README.md

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+# ETA
+
+Estimated time to arrival.
+
+## API
+
+### ctor(count[, autoStartOrOptions])
+
+Constructs ETA object for `count` of iterations. 
+Optionally accepts additional parameter specifying whether time measurement should start immediately (autoStart), or, if it is an object, then it will be treated as options.
+
+Options are:
+
+- autoStart - already described
+- numberFormatter - function, which accepts number and returns string
+
+```js
+var Eta = require('node-eta');
+var eta = new Eta(10);
+```
+
+### start()
+
+Starts time measurement.
+
+### iterate([anything1, anything2, ...])
+
+Notifies estimator that one more iteration has finished.
+Optionally supports any number of arguments that will be passed to `util.format` to produce message, associated with last iteration.
+
+### format([anything1, anything2, ...])
+
+Passes arguments to `util.format` and treats its invocation result as layout where following placeholders can participate:
+
+- `{{elapsed}}` - elapsed time in seconds
+- `{{rate}}` - current rate (iterations per second)
+- `{{estimated}}` - estimated time (total) in seconds
+- `{{progress}}` - progress (fraction of 1)
+- `{{eta}}` - estimated time to arrival in seconds
+- `{{etah}}` - formatted (for human-readability) eta
+- `{{last}}` - message from last iteration, if any
+
+Returns layout filled with placeholder values.
+
+## License
+
+MIT