fix: types and tests coverage

[darkgl0w]

Hello,

closes issue #102 and closes #103 that seems to be abandoned.

• initialize fastify.redis decorator with Object.create(null)
• add test cases to improve coverage
• add namespaced instance types
• typescript namings have been changed to be more explicit (deprecate FastifyRedisPlugin and use FastifyRedisPluginOptions instead)
• add typescript tests
• add a few commands to make maintenance easier on this package
• achieve 100% coverage (closes Coverage 100% #84)

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[climba03003]

LGTM.

[darkgl0w]

Currently there are only 2 statements that are never tested (current coverage is 95.83%):

• the index.js catch block line 31
• the index.js catch block line 53

Maybe I am just too tired but my guesses are that with the way errors are handled those paths are impossible to reach and I don't think there should be try...catch blocks here... WDYT @climba03003 ?

[climba03003]

index.js#L31,L53 is a rare case but it will throw when connection error occur.
https://github.com/luin/ioredis/blob/f6d7777c80a59c528598d94033a2ab8d16b9b6e6/lib/redis/index.ts#L166
https://github.com/luin/ioredis/blob/f6d7777c80a59c528598d94033a2ab8d16b9b6e6/lib/connectors/StandaloneConnector.ts#L64-L89

In this case, use t.mock or proxyquire to replace ioredis class and throw directly in constructor.

[climba03003]

Some minor problem found after revisit the test case.

[mcollina]

lgtm

[darkgl0w]

index.js#L31,L53 is a rare case but it will throw when connection error occur.
https://github.com/luin/ioredis/blob/f6d7777c80a59c528598d94033a2ab8d16b9b6e6/lib/redis/index.ts#L166
https://github.com/luin/ioredis/blob/f6d7777c80a59c528598d94033a2ab8d16b9b6e6/lib/connectors/StandaloneConnector.ts#L64-L89

In this case, use t.mock or proxyquire to replace ioredis class and throw directly in constructor.

Thanks to you I found a way to force Redis to actually throw an error that we can catch in order to test those 2 statements ^^

[darkgl0w]

@climba03003 > Concerning the Public exported FastifyRedisPlugin type name WDYT if we make something like this darkgl0w@aae237a in order to enforce explicit types naming without breaking existing users code ?

[climba03003]

@climba03003 > Concerning the Public exported FastifyRedisPlugin type name WDYT if we make something like this darkgl0w@aae237a in order to enforce explicit types naming without breaking existing users code ?

Yes. it is fine.

[climba03003]

LGTM.