Use better fix for messed JSON output in yarn analyze command

[vojtechszocs]

yarn analyze command generates webpack bundle stats (public/dist/stats.json) and passes it to webpack-bundle-analyzer which generates visual HTML report (public/dist/report.html).

Unfortunately, above mentioned stats.json file gets polluted with logging messages:

Starting type checking service...
Using 1 worker with 2048MB memory limit
{
  (JSON stats here)
}

The current fix awk '{if(NR>2)print}' simply removes the first 2 lines, which isn't very robust or future-proof.

The proposed fix sed '0,/^{/s/^[^{].*//g' works like this:

• use a character range that starts from beginning (0) and ends with first occurence of regexp ^{ which marks the start of JSON stats object
• on this character range, replace regexp ^[^{].* (any line that doesn't start with {) with empty string

Verification:

$ cat <<EOF >test
foo bar {
baz qux
{
  "errors": [],
  "warnings": [],
  "test": {}
}
EOF
# writes above to 'test' file

$ cat test | sed '0,/^{/s/^[^{].*//g'


{
  "errors": [],
  "warnings": [],
  "test": {}
}
# replaces extra logs with empty strings

[spadgett]

/lgtm

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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Please review the full test history for this PR and help us cut down flakes.

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dtaylor113, spadgett, vojtechszocs

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