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README.md
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#
convert
-
source
-
map
[![
build
status
](
https
:
//secure.travis-ci.org/thlorenz/convert-source-map.svg?branch=master)](http://travis-ci.org/thlorenz/convert-source-map)
<
a
href
=
"https://www.patreon.com/bePatron?u=8663953"
><
img
alt
=
"become a patron"
src
=
"https://c5.patreon.com/external/logo/become_a_patron_button.png"
height
=
"35px"
></
a
>
Converts
a
source
-
map
from
/
to
different
formats
and
allows
adding
/
changing
properties
.
```
js
var
convert
=
require
(
'
convert
-
source
-
map
'
);
var
json
=
convert
.
fromComment
(
'
//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVpbGQvZm9vLm1pbi5qcyIsInNvdXJjZXMiOlsic3JjL2Zvby5qcyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSIsInNvdXJjZVJvb3QiOiIvIn0=')
.
toJSON
();
var
modified
=
convert
.
fromComment
(
'
//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVpbGQvZm9vLm1pbi5qcyIsInNvdXJjZXMiOlsic3JjL2Zvby5qcyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSIsInNvdXJjZVJvb3QiOiIvIn0=')
.
setProperty
(
'
sources
'
,
[
'
SRC
/
FOO
.
JS
'
])
.
toJSON
();
console
.
log
(
json
);
console
.
log
(
modified
);
```
```
json
{
"version"
:
3
,
"file"
:
"build/foo.min.js"
,
"sources"
:[
"src/foo.js"
],
"names"
:[],
"mappings"
:
"AAAA"
,
"sourceRoot"
:
"/"
}
{
"version"
:
3
,
"file"
:
"build/foo.min.js"
,
"sources"
:[
"SRC/FOO.JS"
],
"names"
:[],
"mappings"
:
"AAAA"
,
"sourceRoot"
:
"/"
}
```
##
API
###
fromObject
(
obj
)
Returns
source
map
converter
from
given
object
.
###
fromJSON
(
json
)
Returns
source
map
converter
from
given
json
string
.
###
fromBase64
(
base64
)
Returns
source
map
converter
from
given
base64
encoded
json
string
.
###
fromComment
(
comment
)
Returns
source
map
converter
from
given
base64
encoded
json
string
prefixed
with
`//# sourceMappingURL=...`
.
###
fromMapFileComment
(
comment
,
mapFileDir
)
Returns
source
map
converter
from
given
`filename` by parsing `//# sourceMappingURL=filename`
.
`filename` must point to a file that is found inside the `mapFileDir`
.
Most
tools
store
this
file
right
next
to
the
generated
file
,
i
.
e
.
the
one
containing
the
source
map
.
###
fromSource
(
source
)
Finds
last
sourcemap
comment
in
file
and
returns
source
map
converter
or
returns
null
if
no
source
map
comment
was
found
.
###
fromMapFileSource
(
source
,
mapFileDir
)
Finds
last
sourcemap
comment
in
file
and
returns
source
map
converter
or
returns
null
if
no
source
map
comment
was
found
.
The
sourcemap
will
be
read
from
the
map
file
found
by
parsing
`# sourceMappingURL=file`
comment
.
For
more
info
see
fromMapFileComment
.
###
toObject
()
Returns
a
copy
of
the
underlying
source
map
.
###
toJSON
([
space
])
Converts
source
map
to
json
string
.
If
`space`
is
given
(
optional
),
this
will
be
passed
to
[
JSON
.
stringify
](
https
:
//developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/JSON/stringify) when the
JSON
string
is
generated
.
###
toBase64
()
Converts
source
map
to
base64
encoded
json
string
.
###
toComment
([
options
])
Converts
source
map
to
an
inline
comment
that
can
be
appended
to
the
source
-
file
.
By
default
,
the
comment
is
formatted
like
:
`//# sourceMappingURL=...`
,
which
you
would
normally
see
in
a
JS
source
file
.
When
`options.multiline == true`, the comment is formatted like: `/*# sourceMappingURL=... */`
,
which
you
would
find
in
a
CSS
source
file
.
###
addProperty
(
key
,
value
)
Adds
given
property
to
the
source
map
.
Throws
an
error
if
property
already
exists
.
###
setProperty
(
key
,
value
)
Sets
given
property
to
the
source
map
.
If
property
doesn
'
t
exist
it
is
added
,
otherwise
its
value
is
updated
.
###
getProperty
(
key
)
Gets
given
property
of
the
source
map
.
###
removeComments
(
src
)
Returns
`src`
with
all
source
map
comments
removed
###
removeMapFileComments
(
src
)
Returns
`src`
with
all
source
map
comments
pointing
to
map
files
removed
.
###
commentRegex
Provides
__a
fresh__
RegExp
each
time
it
is
accessed
.
Can
be
used
to
find
source
map
comments
.
###
mapFileCommentRegex
Provides
__a
fresh__
RegExp
each
time
it
is
accessed
.
Can
be
used
to
find
source
map
comments
pointing
to
map
files
.
###
generateMapFileComment
(
file
,
[
options
])
Returns
a
comment
that
links
to
an
external
source
map
via
`file`
.
By
default
,
the
comment
is
formatted
like
:
`//# sourceMappingURL=...`
,
which
you
would
normally
see
in
a
JS
source
file
.
When
`options.multiline == true`, the comment is formatted like: `/*# sourceMappingURL=... */`
,
which
you
would
find
in
a
CSS
source
file
.
[![
Bitdeli
Badge
](
https
:
//d2weczhvl823v0.cloudfront.net/thlorenz/convert-source-map/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
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