esquery
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ESQuery is a library for querying the AST output by Esprima for patterns of syntax using a CSS style selector system. Check out the demo:
The following selectors are supported:
ForStatement
*
[attr]
[attr="foo"]
or [attr=123]
[attr=/foo.*/]
or (with flags) [attr=/foo.*/is]
[attr!="foo"]
, [attr>2]
, [attr<3]
, [attr>=2]
, or [attr<=3]
[attr.level2="foo"]
FunctionDeclaration > Identifier.id
:first-child
or :last-child
:nth-child(2)
:nth-last-child(1)
ancestor descendant
parent > child
node ~ sibling
node + adjacent
:not(ForStatement)
:has(ForStatement)
:matches([attr] > :first-child, :last-child)
!IfStatement > [name="foo"]
:statement
, :expression
, :declaration
, :function
, or :pattern
FAQs
A query library for ECMAScript AST using a CSS selector like query language.
The npm package esquery receives a total of 25,814,409 weekly downloads. As such, esquery popularity was classified as popular.
We found that esquery demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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