Suppose a big yml file like below:
# the simple demo here
html:
header: hello there
# the body
body:
sidePanel: 'I am the side panel'
container: 'I am the container'
imglist:
image1: 'I am image image 1'
image2: 'I am image image 2'
footer: 'I am the footer'
...
after install from npm npm install find_key_from_yml,
run and pass line numbers: what_is_line test.yml 9 ,
it'll output this line's key in the yml object html.body.imglist.image1