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Linter/Syntax Checker for EJS Templates.
This was born out of mde/ejs #119 and the frustration of the unhelpful errors thrown if you make a simple syntax error inside a scriptlet tag.
EJS-Lint parses scriptlet tags (<%
, %>
, <%_
, _%>
, and -%>
) and expression tags (<%=
and <%-
).
Note: This linter does not attempt to check for unclosed EJS tags, so if you get an error Unexpected token
with a line number that doesn't contain any scriptlets, you most likely forgot to close a tag earlier.
It will error out if it encounters an old-style include
s (<% include filename %>
) by default, but will tolerate them if the --preprocessor-include
/preprocessorInclude
option is set. It does not lint included files regardless of the method of inclusion.
Using await
inside your ejs template will also throw an error by default - use option --await
/await
to allow usage of await
in the template.
It can work with custom delimiters, just pass it in the options (if using the API) or pass the --delimiter
(-d
) flag on the CLI.
To install globally, for command-line use:
npm install -g ejs-lint
EJS-Lint replaces everything outside a scriptlet tag with whitespace (to retain line & column numbers) and then runs the resulting (hopefully) valid JS through node-syntax-error to check for errors.
We use rewire to load EJS. This allows us to access Template.parseTemplateText()
, an internal function that parses the string and splits it into an array.
Why can't EJS do this? At EJS, we try to keep the library lightweight. EJS-Lint uses acorn which is too large a dependency for EJS.
Usage:
ejslint <file> [-d=?]
If no file is specified, reads from stdin
Options:
--help Show help [boolean]
--version Show version number [boolean]
-d, --delimiter Specify a custom delimiter ( i.e. <? instead of <% ) [string]
--preprocessor-include Allow old (pre-EJS v3) preprocessor-style includes [boolean]
--await Allow usage of await inside template [boolean]
Require:
const ejsLint = require('ejs-lint');
Then do ejsLint(text, options)
; where text
is the EJS template and options
are the EJS options (can additionally set preprocessorInclude
to
allow for old-style includes or set await
to allow usage of await inside the template).
This returns a node-syntax-error object that you can parse.
MIT
FAQs
Linter/Syntax Checker for EJS Templates
The npm package ejs-lint receives a total of 23,087 weekly downloads. As such, ejs-lint popularity was classified as popular.
We found that ejs-lint demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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