apidays LIVE New York - API for Legacy Industries: Banking, Insurance, Healthcare and Retail Navigating the Sea of Javascript Tools to Discover Scalable Tools for Continuous Delivery Menelaos Kotsollaris, Senior Software Engineer Viki Green, Senior Software Developer at Trulioo

1. Navigating the Sea 🌊 of JavaScript
Tools to Discover Scalable Tools
for Continuous Delivery ⏯
Menelaos Kotsollaris & Viki Green
July 27, apidays

2. 1
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3
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5
Agenda
2
Growing pains
Picking the right Tools
Continuous Delivery
Team Principles
Continuous Improvement Methodologies

3. 3
The problem
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4. Continuous Integration &
Continuous Delivery [CI/CD]
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Commit:
9938f82b
Trigger
Workflows Success 🚀

5. 5
name: Publish
on:
push:
branches:
- master
jobs:
release:
name: release
runs-on: ubuntu-latest
strategy:
node-version: [14.x]
steps:
- uses: actions/checkout@v1
- uses: actions/setup-node@v1
with:
registry-url: "https://registry.npmjs.org"
GH_TOKEN: ${{ secrets.GH_TOKEN }}
NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
run: npm config set '//registry.npmjs.org/
:_authToken' "${{ secrets.NPM_TOKEN }}"
- run: npm whoami
- run: npm ci
- run: npm run test -- --coverage
- run: npm run semantic-release
Continuous Integration &
Continuous Delivery [CI/CD]

6. Available Tools
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7. 7

8. 8

9. Typescript vs Javascript
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Typescript Javascript
Statically typed Dynamically typed
Throws errors at compile time Throws errors at runtime
Types + interfaces No types
Needs to be compiled No need to be compiled
Steeper learning curve Easy to learn

10. Trunk based vs branch based
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Trunk Based Branch Based
Short lived branches Merge hell
Less to maintain Many ‘main’ branches to maintain
Code needs to be ‘production ready’ Immature code will not be released to
production

11. ● What works for our team
● Is it necessary
● Does it actually do what you want it to do
● It it regularly maintained
○ Does it have any vulnerabilities
○ Are bugs quickly resolved
○ When was it last released
○ Is it open source or not
● Does it have an active community
● How large is it (only really relevant for prod dependencies)
11
Factors we use to choose a library

12. ● 100% unit test coverage - jest
● Code analysis scanner and vulnerability scanner - SonarCloud
● Full automation test suite - jest + selenium
12
Tools we use to ensure code quality

13. The art of Gatekeeping
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Congrats!
You onboarded all of your developers
and they are happily contributing to the project!
Now what?!
Code ReviewsDesign Reviews Tech-Debt rotation

14. 14
● End-to-End Ownership
● Decrease Lead Time
● Increase Experimentation
Continuous Improvement

15. 15
● Pick-and-Choose Tools
● Productivity-Boost
● Trunk-Based Development
● Continuous integration
● Code & Design reviews
● Tech-Debt Rotation
Summary

16. Thank you! 🚀
Come say hi in our booth!
Menelaos Kotsollaris
Senior Software Engineer
menelaos.kotsollaris@trulioo.com
menelaos.dev
@mkotsollaris
@mkotsollaris
@menelaos-kotsollaris
Viki Green
Lead Software Engineer
viki.green@trulioo.com
@VictoriaGreen93
@viki-green