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Simplify browser ranges #185

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Simplify browser ranges #185

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18 changes: 9 additions & 9 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,15 +23,15 @@ cat main.css | doiuse --browsers "ie >= 9, > 1%, last 2 versions"

**Sample output:**
```
/projects/website/main.css:5:3: CSS3 Box-sizing not supported by: IE (8,9,10,11), Chrome (36,37,38), Safari (8,7.1), Opera (24,25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10,11)
/projects/website/main.css:6:3: CSS3 Box-sizing not supported by: IE (8,9,10,11), Chrome (36,37,38), Safari (8,7.1), Opera (24,25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10,11)
/projects/website/main.css:8:3: CSS user-select: none not supported by: IE (8,9)
/projects/website/main.css:9:3: CSS user-select: none not supported by: IE (8,9)
/projects/website/main.css:10:3: CSS user-select: none not supported by: IE (8,9)
/projects/website/main.css:11:3: CSS user-select: none not supported by: IE (8,9)
/projects/website/main.css:12:3: CSS user-select: none not supported by: IE (8,9)
/projects/website/main.css:13:3: Pointer events not supported by: IE (8,9,10), Firefox (32,33), Chrome (36,37,38), Safari (8,7.1), Opera (24,25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10)
/projects/website/main.css:14:3: Pointer events not supported by: IE (8,9,10), Firefox (32,33), Chrome (36,37,38), Safari (8,7.1), Opera (24,25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10)
/projects/website/main.css:5:3: CSS3 Box-sizing not supported by: IE (8-11), Chrome (36-38), Safari (8,7.1), Opera (24-25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10-11)
/projects/website/main.css:6:3: CSS3 Box-sizing not supported by: IE (8-11), Chrome (36-38), Safari (8,7.1), Opera (24-25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10-11)
/projects/website/main.css:8:3: CSS user-select: none not supported by: IE (8-9)
/projects/website/main.css:9:3: CSS user-select: none not supported by: IE (8-9)
/projects/website/main.css:10:3: CSS user-select: none not supported by: IE (8-9)
/projects/website/main.css:11:3: CSS user-select: none not supported by: IE (8-9)
/projects/website/main.css:12:3: CSS user-select: none not supported by: IE (8-9)
/projects/website/main.css:13:3: Pointer events not supported by: IE (8-10), Firefox (32-33), Chrome (36-38), Safari (8,7.1), Opera (24-25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10)
/projects/website/main.css:14:3: Pointer events not supported by: IE (8-10), Firefox (32-33), Chrome (36-38), Safari (8,7.1), Opera (24-25), iOS Safari (8,7.1,8.1), Android Browser (4.1,4.4,4.4.4), IE Mobile (10)
/projects/website/main.css:32:3: CSS3 Transforms not supported by: IE (8)
```

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8 changes: 4 additions & 4 deletions test/cli.js
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Expand Up @@ -11,13 +11,13 @@ const pathToCli = ` node ${joinPath(selfPath, '../bin/cli.js')}`;
const catCss = ` cat ${cssFile} `;

const expectedCssGradients = [
'<streaming css input>:8:1: CSS Gradients not supported by: IE (8,9) (css-gradients)\n',
'<streaming css input>:12:1: CSS Gradients not supported by: IE (8,9) (css-gradients)\n',
'<streaming css input>:8:1: CSS Gradients not supported by: IE (8-9) (css-gradients)\n',
'<streaming css input>:12:1: CSS Gradients not supported by: IE (8-9) (css-gradients)\n',
];

const expectedCssRepeatingGradients = [
'<streaming css input>:16:1: CSS Repeating Gradients not supported by: IE (8,9) (css-repeating-gradients)\n',
'<streaming css input>:20:1: CSS Repeating Gradients not supported by: IE (8,9) (css-repeating-gradients)\n',
'<streaming css input>:16:1: CSS Repeating Gradients not supported by: IE (8-9) (css-repeating-gradients)\n',
'<streaming css input>:20:1: CSS Repeating Gradients not supported by: IE (8-9) (css-repeating-gradients)\n',
];
const expected = [
...expectedCssGradients,
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33 changes: 33 additions & 0 deletions test/util.js
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@@ -0,0 +1,33 @@
import { test } from 'tap';
import { formatBrowserName } from '../utils/util.js';

test('works', (t) => {
const cases = [
{
msg: 'consecutive integers',
versions: ['8', '9', '10', '11'],
expected: 'IE (8-11)',
},
{
msg: 'multiple ranges',
versions: ['8', '9', '11', '12', '17', '19'],
expected: 'IE (8-9,11-12,17,19)',
},
{
msg: 'minor version',
versions: ['8', '9', '9.1', '10', '11'],
expected: 'IE (8-9,9.1,10-11)',
},
{
msg: 'non numerical version',
versions: ['8', '9', '9-beta', '10', '11'],
expected: 'IE (8-9,9-beta,10-11)',
},
];

for (const caseItem of cases) {
const actual = formatBrowserName('ie', caseItem.versions);
t.same(actual, caseItem.expected, caseItem.msg);
}
t.end();
});
40 changes: 39 additions & 1 deletion utils/util.js
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Expand Up @@ -23,7 +23,45 @@ export function formatBrowserName(browserKey, versions) {
if (!versions) {
return browserName || '';
}
return (`${browserName} (${versions.join(',')})`);

const ranges = [];
let rangeStart = -1;
let rangeEnd = -1;

for (const [index, versionString] of versions.entries()) {
const current = +versionString;
const next = +versions[index + 1];

if (Number.isInteger(current)) {
if (rangeStart === -1) {
rangeStart = current;
rangeEnd = current;
} else if (current === rangeEnd + 1) {
rangeEnd = current;
} else {
ranges.push(rangeStart === rangeEnd ? [rangeStart] : [rangeStart, rangeEnd]);
rangeStart = current;
rangeEnd = current;
}

if (!Number.isInteger(next) || current + 1 !== next) {
ranges.push(rangeStart === rangeEnd ? [rangeStart] : [rangeStart, rangeEnd]);
rangeStart = -1;
rangeEnd = -1;
}
} else {
if (rangeStart !== -1) {
ranges.push(rangeStart === rangeEnd ? [rangeStart] : [rangeStart, rangeEnd]);
rangeStart = -1;
rangeEnd = -1;
}
ranges.push([versionString]);
}
}

const versionString = ranges.map((range) => range.join('-')).join(',');

return `${browserName} (${versionString})`;
}

/**
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