eslint configuration for getting-started examples

[alisabzevari]

fixes #1390

Which problem is this PR solving?

• Adds linting to getting-started directory.

Short description of the changes

• I tried to use the similar configuration as examples directory. Although the ts-example needed another configuration.
• I have added two lint scripts to the pacakge.json but they are not automatically being executed before the commit. This is the case for examples as well.

[codecov]

Codecov Report

Merging #2297 (54dc78a) into main (78a78c0) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2297      +/-   ##
==========================================
+ Coverage   92.70%   92.72%   +0.02%     
==========================================
  Files         137      137              
  Lines        4990     4990              
  Branches     1054     1054              
==========================================
+ Hits         4626     4627       +1     
+ Misses        364      363       -1     

Impacted Files	Coverage Δ
...emetry-core/src/platform/node/RandomIdGenerator.ts	93.75% <0.00%> (+6.25%)	⬆️

[alisabzevari]

Seems like the test is flaky. How can I retrigger the tests?

[obecny]

why did you remove use strict ?

[alisabzevari]

eslint disallows strict mode directives if the sourceType is module (Docs).

[dyladan]

The examples are not ecmascript modules so the sourceType for at least the examples should be script

[dyladan]

Is there any way this can use the already existing eslint rules we have? Don't want to have to maintain two different sets of rules.

[alisabzevari]

Is there any way this can use the already existing eslint rules we have?

I changed the eslintrc to import the eslintrc from the examples directory.

[obecny]

in general, why can't you use our eslint.config.js from main folder and extend from it ?

[dyladan]

That's what he did above https://github.com/open-telemetry/opentelemetry-js/pull/2297/files#diff-4bb0b44ed2e9b719ea2593f63cf9aebd302f9e7a1f3a109e5c35f6ee59d95d87R4

I think he probably just forgot to apply the suggestion to both eslintrc files.

[alisabzevari]

I was not able to use the project eslint config for typescript files because it requires that getting-started being added to the projects. I get this error when using the project eslint config:

0:0  error  Parsing error: "parserOptions.project" has been set for @typescript-eslint/parser.
The file does not match your project config: getting-started/ts-example/traced-example/tracing.ts.
The file must be included in at least one of the projects provided