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what do the "I" and "E" symbols with the black backgrounds signify in the HTML reports generated by the istanbul JS code coverage tool?

enter image description here

almel
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1 Answers1

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These symbols are in front of if-else statements.

As you can see in the image you have attached, 'E' is in front of an if-else statement in which the 'Else' block is not covered and 'I' is in front an if-else statement in which the 'If' block is not covered.