44 lines
1.6 KiB
JavaScript
44 lines
1.6 KiB
JavaScript
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/*
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* Load the units file.
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* -------------------------------------------------------------
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* This file contains an ordered object of unit files. Flitter will load these
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* one at a time to launch the application. Each unit in the sequence is passed
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* the function for the next unit in the sequence. This forms the function stack
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* by chaining the units together, ending with the Flitter App unit.
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*/
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const units = require('./Units.flitter')
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const { FlitterApp, RunLevelErrorHandler } = require('libflitter')
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/*
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* Create the app.
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* -------------------------------------------------------------
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* The FlitterApp object contains the wrapper for the Express app, as well as
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* the initialization function that chains together the individual units. This
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* is why we pass it the units.
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*/
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const flitter = new FlitterApp(units)
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/*
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* Create the error handler.
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* -------------------------------------------------------------
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* The run-level error handler is responsible for dealing with errors that make
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* it all the way to the top level of the running app. Most of the time, routing
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* errors are handled by the router and result in some kind of error page showing
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* to the user.
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*
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* The errors handled by the RLEH are structural errors that are problems with the
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* application itself.
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*/
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const rleh = new RunLevelErrorHandler()
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/*
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* Launch the server.
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* -------------------------------------------------------------
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* This calls the first unit in the unit chain. This chain ends with the Flitter
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* server component which launches the Node HTTP server.
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*
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* Calls up() and down().
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*/
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flitter.run().catch(rleh.handle)
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