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#
caniuse
-
lite
A
smaller
version
of
caniuse
-
db
,
with
only
the
essentials
!
##
Why
?
The
full
data
behind
[
Can
I
use
][
1
]
is
incredibly
useful
for
any
front
end
developer
,
and
on
the
website
all
of
the
details
from
the
database
are
displayed
to
the
user
.
However
in
automated
tools
,
[
many
of
these
fields
go
unused
][
2
];
it
'
s
not
a
problem
for
server
side
consumption
but
client
side
,
the
less
JavaScript
that
we
send
to
the
end
user
the
better
.
caniuse
-
lite
then
,
is
a
smaller
dataset
that
keeps
essential
parts
of
the
data
in
a
compact
format
.
It
does
this
in
multiple
ways
,
such
as
converting
`null`
array
entries
into
empty
strings
,
representing
support
data
as
an
integer
rather
than
a
string
,
and
using
base62
references
instead
of
longer
human
-
readable
keys
.
This
packed
data
is
then
reassembled
(
via
functions
exposed
by
this
module
)
into
a
larger
format
which
is
mostly
compatible
with
caniuse
-
db
,
and
so
it
can
be
used
as
an
almost
drop
-
in
replacement
for
caniuse
-
db
for
contexts
where
size
on
disk
is
important
;
for
example
,
usage
in
web
browsers
.
The
API
differences
are
very
small
and
are
detailed
in
the
section
below
.
##
API
```
js
import
*
as
lite
from
'
caniuse
-
lite
'
;
```
###
`lite.agents`
caniuse
-
db
provides
a
full
`data.json`
file
which
contains
all
of
the
features
data
.
Instead
of
this
large
file
,
caniuse
-
lite
provides
this
data
subset
instead
,
which
has
the
`browser`, `prefix`, `prefix_exceptions`, `usage_global`
and
`versions`
keys
from
the
original
.
In
addition
,
the
subset
contains
the
`release_date`
key
with
release
dates
(
as
timestamps
)
for
each
version
:
```
json
{
"release_date"
:
{
"6"
:
998870400
,
"7"
:
1161129600
,
"8"
:
1237420800
,
"9"
:
1300060800
,
"10"
:
1346716800
,
"11"
:
1381968000
,
"5.5"
:
962323200
}
}
```
###
`lite.feature(js)`
The
`feature` method takes a file from `data/features`
and
converts
it
into
something
that
more
closely
represents
the
`caniuse-db`
format
.
Note
that
only
the
`title`, `stats` and `status`
keys
are
kept
from
the
original
data
.
###
`lite.features`
The
`features`
index
is
provided
as
a
way
to
query
all
of
the
features
that
are
listed
in
the
`caniuse-db`
dataset
.
Note
that
you
will
need
to
use
the
`feature`
method
on
values
from
this
index
to
get
a
human
-
readable
format
.
###
`lite.region(js)`
The
`region` method takes a file from `data/regions`
and
converts
it
into
something
that
more
closely
represents
the
`caniuse-db`
format
.
Note
that
*
only
*
the
usage
data
is
exposed
here
(
the
`data`
key
in
the
original
files
).
##
License
The
data
in
this
repo
is
available
for
use
under
a
CC
BY
4.0
license
(
http
:
//creativecommons.org/licenses/by/4.0/). For attribution just mention
somewhere
that
the
source
is
caniuse
.
com
.
If
you
have
any
questions
about
using
the
data
for
your
project
please
contact
me
here
:
http
:
//a.deveria.com/contact
[
1
]:
http
:
//caniuse.com/
[
2
]:
https
:
//github.com/Fyrd/caniuse/issues/1827
##
Security
contact
information
To
report
a
security
vulnerability
,
please
use
the
[
Tidelift
security
contact
](
https
:
//tidelift.com/security).
Tidelift
will
coordinate
the
fix
and
disclosure
.
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