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Add basic color detection #5

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merged 15 commits into from
Oct 27, 2021
Merged

Add basic color detection #5

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Add basic color detection
Richienb Oct 8, 2021
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Update readme.md
Richienb Oct 8, 2021
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Richienb Oct 8, 2021
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Richienb Oct 8, 2021
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Richienb Oct 8, 2021
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Richienb Oct 8, 2021
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Richienb Oct 9, 2021
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sindresorhus Oct 24, 2021
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Richienb Oct 24, 2021
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Richienb Oct 27, 2021
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sindresorhus Oct 27, 2021
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7 changes: 6 additions & 1 deletion index.js
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@@ -1,5 +1,10 @@
import tty from 'node:tty';

// TODO: Use a better method when it's added to Node.js (https://github.com/nodejs/node/pull/40240)
const hasColors = tty.WriteStream.prototype.hasColors();
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@Richienb

Was there a reason for doing this instead of process.stdout.hasColors()?

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I don't remember.

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I believe the answer is in the TODO comment. process.stdout.hasColors() was not available then.

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Sorry, I missed that.

Seems process.stdout.hasColors() has been available. However, they're trying to deprecate it because:

In the PR, they're trying to expose a standalone function but is blocked by deprecation strategy for the prototype method.


// Intentionally not using template literal for performance.
const format = (startCode, endCode) => string => '\u001B[' + startCode + 'm' + string + '\u001B[' + endCode + 'm';
const format = (startCode, endCode) => hasColors ? string => '\u001B[' + startCode + 'm' + string + '\u001B[' + endCode + 'm' : string => string;

export const reset = format(0, 0);
export const bold = format(1, 22);
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5 changes: 5 additions & 0 deletions package.json
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Expand Up @@ -46,5 +46,10 @@
"ava": "^3.15.0",
"tsd": "^0.17.0",
"xo": "^0.44.0"
},
"ava": {
"environmentVariables": {
"FORCE_COLOR": "1"
}
}
}
2 changes: 1 addition & 1 deletion readme.md
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Expand Up @@ -29,7 +29,7 @@ import * as colors from 'yoctocolors';
console.log(colors.red('Yo!'));
```

*This package does not do color support detection. Check out [`supports-color`](https://github.com/chalk/supports-color) if you need that. Node.js will hopefully get [built-in support](https://github.com/nodejs/node/pull/40240) for color support detection at some point.*
*This package supports [basic color detection](https://nodejs.org/api/tty.html#writestreamhascolorscount-env). Colors can be forcefully enabled by setting the `FORCE_COLOR` environment variable to `1` and can be forcefully disabled by setting `NO_COLOR` or `NODE_DISABLE_COLORS` to any value. [More info.](https://nodejs.org/api/tty.html#writestreamgetcolordepthenv)*

## Styles

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