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JavaScript/archive/code/node_modules/debug/src/node.js at main · iu5git/JavaScript · GitHub
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JavaScript
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archive
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code
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node_modules
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debug
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src
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node.js
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JavaScript
/
archive
/
code
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node_modules
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debug
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src
/
node.js
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"use strict"
;
/**
* Module dependencies.
*/
var
tty
=
require
(
'tty'
)
;
var
util
=
require
(
'util'
)
;
/**
* This is the Node.js implementation of `debug()`.
*/
exports
.
init
=
init
;
exports
.
log
=
log
;
exports
.
formatArgs
=
formatArgs
;
exports
.
save
=
save
;
exports
.
load
=
load
;
exports
.
useColors
=
useColors
;
/**
* Colors.
*/
exports
.
colors
=
[
6
,
2
,
3
,
4
,
5
,
1
]
;
try
{
// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
// eslint-disable-next-line import/no-extraneous-dependencies
var
supportsColor
=
require
(
'supports-color'
)
;
if
(
supportsColor
&&
(
supportsColor
.
stderr
||
supportsColor
)
.
level
>=
2
)
{
exports
.
colors
=
[
20
,
21
,
26
,
27
,
32
,
33
,
38
,
39
,
40
,
41
,
42
,
43
,
44
,
45
,
56
,
57
,
62
,
63
,
68
,
69
,
74
,
75
,
76
,
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,
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,
79
,
80
,
81
,
92
,
93
,
98
,
99
,
112
,
113
,
128
,
129
,
134
,
135
,
148
,
149
,
160
,
161
,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
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,
208
,
209
,
214
,
215
,
220
,
221
]
;
}
}
catch
(
error
)
{
}
// Swallow - we only care if `supports-color` is available; it doesn't have to be.
/**
* Build up the default `inspectOpts` object from the environment variables.
*
* $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
*/
exports
.
inspectOpts
=
Object
.
keys
(
process
.
env
)
.
filter
(
function
(
key
)
{
return
/
^
d
e
b
u
g
_
/
i
.
test
(
key
)
;
}
)
.
reduce
(
function
(
obj
,
key
)
{
// Camel-case
var
prop
=
key
.
substring
(
6
)
.
toLowerCase
(
)
.
replace
(
/
_
(
[
a
-
z
]
)
/
g
,
function
(
_
,
k
)
{
return
k
.
toUpperCase
(
)
;
}
)
;
// Coerce string value into JS value
var
val
=
process
.
env
[
key
]
;
if
(
/
^
(
y
e
s
|
o
n
|
t
r
u
e
|
e
n
a
b
l
e
d
)
$
/
i
.
test
(
val
)
)
{
val
=
true
;
}
else
if
(
/
^
(
n
o
|
o
f
f
|
f
a
l
s
e
|
d
i
s
a
b
l
e
d
)
$
/
i
.
test
(
val
)
)
{
val
=
false
;
}
else
if
(
val
===
'null'
)
{
val
=
null
;
}
else
{
val
=
Number
(
val
)
;
}
obj
[
prop
]
=
val
;
return
obj
;
}
,
{
}
)
;
/**
* Is stdout a TTY? Colored output is enabled when `true`.
*/
function
useColors
(
)
{
return
'colors'
in
exports
.
inspectOpts
?
Boolean
(
exports
.
inspectOpts
.
colors
)
:
tty
.
isatty
(
process
.
stderr
.
fd
)
;
}
/**
* Adds ANSI color escape codes if enabled.
*
*
@api
public
*/
function
formatArgs
(
args
)
{
var
name
=
this
.
namespace
,
useColors
=
this
.
useColors
;
if
(
useColors
)
{
var
c
=
this
.
color
;
var
colorCode
=
"\x1B[3"
+
(
c
<
8
?
c
:
'8;5;'
+
c
)
;
var
prefix
=
" "
.
concat
(
colorCode
,
";1m"
)
.
concat
(
name
,
" \x1B[0m"
)
;
args
[
0
]
=
prefix
+
args
[
0
]
.
split
(
'\n'
)
.
join
(
'\n'
+
prefix
)
;
args
.
push
(
colorCode
+
'm+'
+
module
.
exports
.
humanize
(
this
.
diff
)
+
"\x1B[0m"
)
;
}
else
{
args
[
0
]
=
getDate
(
)
+
name
+
' '
+
args
[
0
]
;
}
}
function
getDate
(
)
{
if
(
exports
.
inspectOpts
.
hideDate
)
{
return
''
;
}
return
new
Date
(
)
.
toISOString
(
)
+
' '
;
}
/**
* Invokes `util.format()` with the specified arguments and writes to stderr.
*/
function
log
(
)
{
return
process
.
stderr
.
write
(
util
.
format
.
apply
(
util
,
arguments
)
+
'\n'
)
;
}
/**
* Save `namespaces`.
*
*
@param
{
String
} namespaces
*
@api
private
*/
function
save
(
namespaces
)
{
if
(
namespaces
)
{
process
.
env
.
DEBUG
=
namespaces
;
}
else
{
// If you set a process.env field to null or undefined, it gets cast to the
// string 'null' or 'undefined'. Just delete instead.
delete
process
.
env
.
DEBUG
;
}
}
/**
* Load `namespaces`.
*
*
@return
{
String
} returns the previously persisted debug modes
*
@api
private
*/
function
load
(
)
{
return
process
.
env
.
DEBUG
;
}
/**
* Init logic for `debug` instances.
*
* Create a new `inspectOpts` object in case `useColors` is set
* differently for a particular `debug` instance.
*/
function
init
(
debug
)
{
debug
.
inspectOpts
=
{
}
;
var
keys
=
Object
.
keys
(
exports
.
inspectOpts
)
;
for
(
var
i
=
0
;
i
<
keys
.
length
;
i
++
)
{
debug
.
inspectOpts
[
keys
[
i
]
]
=
exports
.
inspectOpts
[
keys
[
i
]
]
;
}
}
module
.
exports
=
require
(
'./common'
)
(
exports
)
;
var
formatters
=
module
.
exports
.
formatters
;
/**
* Map %o to `util.inspect()`, all on a single line.
*/
formatters
.
o
=
function
(
v
)
{
this
.
inspectOpts
.
colors
=
this
.
useColors
;
return
util
.
inspect
(
v
,
this
.
inspectOpts
)
.
split
(
'\n'
)
.
map
(
function
(
str
)
{
return
str
.
trim
(
)
;
}
)
.
join
(
' '
)
;
}
;
/**
* Map %O to `util.inspect()`, allowing multiple lines if needed.
*/
formatters
.
O
=
function
(
v
)
{
this
.
inspectOpts
.
colors
=
this
.
useColors
;
return
util
.
inspect
(
v
,
this
.
inspectOpts
)
;
}
;
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