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I want to convert istanbul
coverage report file fetched from client in JSON format to html format. Currently I'm using remap-istanbul
for this but actually that particular that particular tool is designed to remap coverage data for code which was originally written in different languages (like typescript).
So I guess whether there's more convenient way to do the same
I want to convert istanbul
coverage report file fetched from client in JSON format to html format. Currently I'm using remap-istanbul
for this but actually that particular that particular tool is designed to remap coverage data for code which was originally written in different languages (like typescript).
So I guess whether there's more convenient way to do the same
Share asked Oct 12, 2017 at 12:17 shabuncshabunc 24.9k22 gold badges79 silver badges112 bronze badges2 Answers
Reset to default 7Use istanbul report html
to convert existing coverage data from JSON to HTML:
istanbul report html
By default, the above looks in the current directory (and its subdirectories) for any file starting with "coverage" and ending with ".json", and outputs the HTML reports to the./coverage/
directory.
To convert a specific file to a specific directory:
istanbul report --include path/to/my-coverage-file.json --dir my-coverage-dir html
Another way to only read coverage reports from a specific directory (e.g. all JSON files in path/to
) is as follows, using the --root
option:
istanbul report --root path/to --include=*.json --dir my-coverage-dir html
Use istanbul help report
to see more options (the following is generated with istanbul 0.4.5):
Usage: istanbul report <options> [ <format> ... ]
Options are:
--config <path-to-config>
the configuration file to use, defaults to .istanbul.yml
--root <input-directory>
The input root directory for finding coverage files
--dir <report-directory>
The output directory where files will be written. This defaults
to ./coverage/
--include <glob>
The glob pattern to select one or more coverage files, defaults
to **/coverage*.json
--verbose, -v
verbose mode
<format> is one of
clover XML coverage report that can be consumed by the clover tool
cobertura
XML coverage report that can be consumed by the cobertura tool
html Navigable HTML coverage report for every file and directory
json prints the coverage object as JSON to a file
json-summary
prints a summary coverage object as JSON to a file
lcov bined lcovonly and html report that generates an lcov.info
file as well as HTML
lcovonly
lcov coverage report that can be consumed by the lcov tool
none Does nothing. Useful to override default behavior and suppress
reporting entirely
teamcity
report with system messages that can be interpreted with TeamCity
text text report that prints a coverage line for every file, typically
to console
text-lcov
lcov coverage report that can be consumed by the lcov tool
text-summary
text report that prints a coverage summary across all files,
typically to console
Default format is lcov unless otherwise specified in the config file. In
addition you can tweak the file names for various reports using the config
file. Type `istanbul help config` to see what can be tweaked.
The value of --input
is a glob pattern. For more documentation on glob patterns, see the documentation at the glob
package on NPM.
I guess as istanbul has decided to move towards mono-repo, you will not be able to do the above mentioned method if you use mono-repo istanbul.
You can do something as described here: link . You can generate a coverage map and then pass it to generate the report in the desired format.
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