de-heredoc
v0.0.5
Published
Transform "heredoc call" to "string literal" in JavaScript source code before minifications
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Readme
#de-heredoc Transform "heredoc call" to "string literal" in JavaScript source code before minifications.
Install
$ npm install de-heredoc
Usage
heredoc
is a function to make multiline strings in JavaScript, there are already some libraries you can use e.g. heredoc and multiline.
$ cat test.js
var heredoc = require("heredoc");
var html = heredoc(function(){/*
<div id="test">
<span>foo</span>
<span>bar</span>
</div>
*/});
$ node
> var deHeredoc = require("de-heredoc")
> deHeredoc("test.js")
(^C again to quit)
>
$ cat test.js
var html='<div id="test">\n <span>foo</span>\n <span>bar</span>\n</div>';
Options
deHeredoc(file[, options])
options
has 4 properties, from
dependency
beautify
and whitespace
.
from
Control file
's type.
"file" (default)
file
is a file path, change this file in place and return undefined
.
If the value of from
is "file", then the file
parameter can be an array.
deHeredoc(["a.js", "b.js", "c.js"], {from: "file"})
"string"
file
is a string of JS source code, return the new source code.
deHeredoc('var foo = heredoc(function(){/*foo*/})',{
from: "string"
}) // 'var foo="foo";'
"ast"
file
is an UglifyJS AST object, return the new AST object.
var ast = UglifyJS.parse('var foo = heredoc(function(){/*foo*/})')
var newAst = deHeredoc(ast, {
from: "ast"
})
newAst.print_to_string() // 'var foo="foo";'
dependency
The heredoc
library's name.
"heredoc" (default)
deHeredoc('var multiline = require("maybesomepath/multiline");' +
'var foo = multiline(function(){/*foo*/})',{
from: "string",
dependency: "multiline"
}) // 'var foo="foo";'
###beautify Beautify output source code or not.
false (default)
deHeredoc('if(1+1){var foo=heredoc(function(){/*foo*/})}', {
from: "string",
beautify: true
})
/*
if (1 + 1) {
var foo = "foo";
}
*/
###whitespace Control whitespaces in output string literals, see Whitespaces
"indent" (default), "raw" and "oneline".
deHeredoc('var foo=heredoc(function(){/* foo */})', {
from: "string",
whitespace: "oneline"
}) // 'var foo="foo";'
Whitespaces
You can use parameter name to control whitespaces in output string literals.
indent
Strip the redundant leading whitespaces, and preserve other indents.
var html = heredoc(function(indent){/*
<div id="test">
<span>foo</span>
<span>bar</span>
</div>
*/});
will be transformed to
var html='<div id="test">\n <span>foo</span>\n <span>bar</span>\n</div>';
raw
Preserve all whitespaces.
var html = heredoc(function(raw){/*
<div id="test">
<span>foo</span>
<span>bar</span>
</div>
*/});
will be transformed to
var html=' <div id="test">\n <span>foo</span>\n <span>bar</span>\n </div>';
oneline
Remove all leading and trailing whitespaces.
var html = heredoc(function(oneline){/*
<div id="test">
<span>foo</span>
<span>bar</span>
</div>
*/});
will be transformed to
var html='<div id="test"><span>foo</span><span>bar</span></div>';
License
MIT