feat: user config + default config merge for MeterProvider, Meter

[naseemkullah]

Please review #1493 first, it is simpler than this PR, but shares some similarities.

Which problem is this PR solving?

• partially Trace and Meter Provider Specs Defaults #1417

Short description of the changes

@naseemkullah

Member
naseemkullah commented on Sep 3 •
Which problem is this PR solving?
partially #1417

Short description of the changes

• Deep merge user supplied Meter and MeterProvider configs into default config by means of lodash.merge

[codecov]

Codecov Report

Merging #1491 (da3f4f5) into master (f6702bd) will decrease coverage by 0.19%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1491      +/-   ##
==========================================
- Coverage   92.49%   92.30%   -0.20%     
==========================================
  Files         173      169       -4     
  Lines        6038     5728     -310     
  Branches     1284     1236      -48     
==========================================
- Hits         5585     5287     -298     
+ Misses        453      441      -12     

Impacted Files	Coverage Δ
packages/opentelemetry-metrics/src/Meter.ts	88.69% <100.00%> (+0.30%)	⬆️
...ackages/opentelemetry-metrics/src/MeterProvider.ts	89.47% <100.00%> (+1.23%)	⬆️
...mentation-xml-http-request/src/enums/EventNames.ts
...s/opentelemetry-instrumentation-fetch/src/fetch.ts
...-instrumentation-fetch/src/enums/AttributeNames.ts
...emetry-instrumentation-xml-http-request/src/xhr.ts
...emetry-core/src/platform/node/RandomIdGenerator.ts	93.75% <0.00%> (+6.25%)	⬆️

[naseemkullah]

Please review #1493 first, it is simpler than this PR, but shares some similarities.

[naseemkullah]

lint failing in untouched file /home/runner/work/opentelemetry-js/opentelemetry-js/packages/opentelemetry-web/src/utils.ts

/home/runner/work/opentelemetry-js/opentelemetry-js/packages/opentelemetry-web/src/utils.ts
  128:70  error  Replace `⏎····PerformanceResourceTiming⏎··` with `PerformanceResourceTiming`  prettier/prettier

✖ 1 problem (1 error, 0 warnings)
  1 error and 0 warnings potentially fixable with the `--fix` option.