Update packages

[yvbeek]

I've updated the dependencies and ran the tests.
This should fix the flatten dependency warning.

[yvbeek]

Hmmm, it turns out the tests fail.

I'm trying to upgrade the code for the newer postcss-values-parser version. But I have no clue why the test command keeps failing:

> postcss-color-gray@5.0.0 test:tape /Users/Z/Projects/PostCSS-Color-Gray
> postcss-tape

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! postcss-color-gray@5.0.0 test:tape: `postcss-tape`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the postcss-color-gray@5.0.0 test:tape script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/Z/.npm/_logs/2019-06-12T01_27_09_403Z-debug.log

The log file contains:

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli   '/usr/local/Cellar/node/12.4.0/bin/node',
1 verbose cli   '/usr/local/bin/npm',
1 verbose cli   'run',
1 verbose cli   'test:tape'
1 verbose cli ]
2 info using npm@6.9.0
3 info using node@v12.4.0
4 verbose run-script [ 'pretest:tape', 'test:tape', 'posttest:tape' ]
5 info lifecycle postcss-color-gray@5.0.0~pretest:tape: postcss-color-gray@5.0.0
6 info lifecycle postcss-color-gray@5.0.0~test:tape: postcss-color-gray@5.0.0
7 verbose lifecycle postcss-color-gray@5.0.0~test:tape: unsafe-perm in lifecycle true
8 verbose lifecycle postcss-color-gray@5.0.0~test:tape: PATH: /usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/Z/Projects/PostCSS-Color-Gray/node_modules/.bin:/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/Z/Projects/PostCSS-Color-Gray/node_modules/.bin:/Users/Z/.rbenv/shims:/usr/local/opt/python/libexec/bin:/usr/local/sbin:/usr/local/bin:/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/share/dotnet:~/.dotnet/tools:/Library/Frameworks/Mono.framework/Versions/Current/Commands
9 verbose lifecycle postcss-color-gray@5.0.0~test:tape: CWD: /Users/Z/Projects/PostCSS-Color-Gray
10 silly lifecycle postcss-color-gray@5.0.0~test:tape: Args: [ '-c', 'postcss-tape' ]
11 silly lifecycle postcss-color-gray@5.0.0~test:tape: Returned: code: 1  signal: null
12 info lifecycle postcss-color-gray@5.0.0~test:tape: Failed to exec test:tape script
13 verbose stack Error: postcss-color-gray@5.0.0 test:tape: `postcss-tape`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:200:13)
13 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:200:13)
13 verbose stack     at maybeClose (internal/child_process.js:1021:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:283:5)
14 verbose pkgid postcss-color-gray@5.0.0
15 verbose cwd /Users/Z/Projects/PostCSS-Color-Gray
16 verbose Darwin 18.6.0
17 verbose argv "/usr/local/Cellar/node/12.4.0/bin/node" "/usr/local/bin/npm" "run" "test:tape"
18 verbose node v12.4.0
19 verbose npm  v6.9.0
20 error code ELIFECYCLE
21 error errno 1
22 error postcss-color-gray@5.0.0 test:tape: `postcss-tape`
22 error Exit status 1
23 error Failed at the postcss-color-gray@5.0.0 test:tape script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

The log seems to indicate that the tests exit with status 1, but it doesn't provide any useful information on what is going wrong 😒

The part of the code that is incompatible with the new version of postcss-values-parser is the appending of commas and numbers e.g. // replace the contents of rgb with (r,g,b)

Amongst a few other changes, I think the code can be changed from:

// replace the contents of rgb with `(r,g,b`
.append(openingSlash)
.append(parser.number({ value: r }))
.append(parser.comma({ value: ',' }))
.append(parser.number({ value: g }))
.append(parser.comma({ value: ',' }))
.append(parser.number({ value: b }))

to

import Numeric from 'postcss-values-parser/lib/nodes/Numeric';
import Punctuation from 'postcss-values-parser/lib/nodes/Punctuation';

// replace the contents of rgb with `(r,g,b`
.append(openingSlash)
.append(new Numeric({ value: r }))
.append(new Punctuation({ value: ',' }))
.append(new Numeric({ value: g }))
.append(new Punctuation({ value: ',' }))
.append(new Numeric({ value: b }));