/
newline-after-import.js
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/
newline-after-import.js
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import { RuleTester } from 'eslint'
import flatMap from 'array.prototype.flatmap'
import { getTSParsers } from '../utils'
const IMPORT_ERROR_MESSAGE = 'Expected 1 empty line after import statement not followed by another import.'
const IMPORT_ERROR_MESSAGE_MULTIPLE = (count) => {
return `Expected ${count} empty lines after import statement not followed by another import.`
}
const REQUIRE_ERROR_MESSAGE = 'Expected 1 empty line after require statement not followed by another require.'
const ruleTester = new RuleTester()
ruleTester.run('newline-after-import', require('rules/newline-after-import'), {
valid: [
`var path = require('path');\nvar foo = require('foo');\n`,
`require('foo');`,
`switch ('foo') { case 'bar': require('baz'); }`,
{
code: `
const x = () => require('baz')
, y = () => require('bar')`,
parserOptions: { ecmaVersion: 6 } ,
},
{
code: `const x = () => require('baz') && require('bar')`,
parserOptions: { ecmaVersion: 6 } ,
},
`function x(){ require('baz'); }`,
`a(require('b'), require('c'), require('d'));`,
`function foo() {
switch (renderData.modalViewKey) {
case 'value':
var bar = require('bar');
return bar(renderData, options)
default:
return renderData.mainModalContent.clone()
}
}`,
{ code: `//issue 441
function bar() {
switch (foo) {
case '1':
return require('../path/to/file1.jst.hbs')(renderData, options);
case '2':
return require('../path/to/file2.jst.hbs')(renderData, options);
case '3':
return require('../path/to/file3.jst.hbs')(renderData, options);
case '4':
return require('../path/to/file4.jst.hbs')(renderData, options);
case '5':
return require('../path/to/file5.jst.hbs')(renderData, options);
case '6':
return require('../path/to/file6.jst.hbs')(renderData, options);
case '7':
return require('../path/to/file7.jst.hbs')(renderData, options);
case '8':
return require('../path/to/file8.jst.hbs')(renderData, options);
case '9':
return require('../path/to/file9.jst.hbs')(renderData, options);
case '10':
return require('../path/to/file10.jst.hbs')(renderData, options);
case '11':
return require('../path/to/file11.jst.hbs')(renderData, options);
case '12':
return something();
default:
return somethingElse();
}
}`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import path from 'path';\nimport foo from 'foo';\n`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import path from 'path';import foo from 'foo';\n`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import path from 'path';import foo from 'foo';\n\nvar bar = 42;`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\n\nvar bar = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\n\n\nvar bar = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
options: [{ 'count': 2 }],
},
{
code: `import foo from 'foo';\n\n\n\n\nvar bar = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
options: [{ 'count': 4 }],
},
{
code: `var foo = require('foo-module');\n\nvar foo = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var foo = require('foo-module');\n\n\nvar foo = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
options: [{ 'count': 2 }],
},
{
code: `var foo = require('foo-module');\n\n\n\n\nvar foo = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
options: [{ 'count': 4 }],
},
{
code: `require('foo-module');\n\nvar foo = 'bar';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\nimport { bar } from './bar-lib';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\n\nvar a = 123;\n\nimport { bar } from './bar-lib';`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var foo = require('foo-module');\n\nvar a = 123;\n\nvar bar = require('bar-lib');`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
function foo() {
var foo = require('foo');
foo();
}
`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
if (true) {
var foo = require('foo');
foo();
}
`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
function a() {
var assign = Object.assign || require('object-assign');
var foo = require('foo');
var bar = 42;
}
`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `//issue 592
export default
@SomeDecorator(require('./some-file'))
class App {}
`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code: `var foo = require('foo');\n\n@SomeDecorator(foo)\nclass Foo {}`,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code : `// issue 1004\nimport foo from 'foo';\n\n@SomeDecorator(foo)\nexport default class Test {}`,
parserOptions: { sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code : `// issue 1004\nconst foo = require('foo');\n\n@SomeDecorator(foo)\nexport default class Test {}`,
parserOptions: { sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
...flatMap(getTSParsers(), (parser) => [
{
code: `
import { ExecaReturnValue } from 'execa';
import execa = require('execa');
`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
import execa = require('execa');
import { ExecaReturnValue } from 'execa';
`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
import { ExecaReturnValue } from 'execa';
import execa = require('execa');
import { ExecbReturnValue } from 'execb';
`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
import execa = require('execa');
import { ExecaReturnValue } from 'execa';
import execb = require('execb');
`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
export import a = obj;\nf(a);
`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `
import { a } from "./a";
export namespace SomeNamespace {
export import a2 = a;
f(a);
}`,
parser: parser,
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
]),
],
invalid: [
{
code: `import foo from 'foo';\nexport default function() {};`,
output: `import foo from 'foo';\n\nexport default function() {};`,
errors: [ {
line: 1,
column: 1,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\n\nexport default function() {};`,
output: `import foo from 'foo';\n\n\nexport default function() {};`,
options: [{ 'count': 2 }],
errors: [ {
line: 1,
column: 1,
message: IMPORT_ERROR_MESSAGE_MULTIPLE(2),
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var foo = require('foo-module');\nvar something = 123;`,
output: `var foo = require('foo-module');\n\nvar something = 123;`,
errors: [ {
line: 1,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\nexport default function() {};`,
output: `import foo from 'foo';\n\nexport default function() {};`,
options: [{ 'count': 1 }],
errors: [ {
line: 1,
column: 1,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\nvar a = 123;\n\nimport { bar } from './bar-lib';\nvar b=456;`,
output: `import foo from 'foo';\n\nvar a = 123;\n\nimport { bar } from './bar-lib';\n\nvar b=456;`,
errors: [
{
line: 1,
column: 1,
message: IMPORT_ERROR_MESSAGE,
},
{
line: 4,
column: 1,
message: IMPORT_ERROR_MESSAGE,
}],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var foo = require('foo-module');\nvar a = 123;\n\nvar bar = require('bar-lib');\nvar b=456;`,
output: `var foo = require('foo-module');\n\nvar a = 123;\n\nvar bar = require('bar-lib');\n\nvar b=456;`,
errors: [
{
line: 1,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
},
{
line: 4,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
}],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var foo = require('foo-module');\nvar a = 123;\n\nrequire('bar-lib');\nvar b=456;`,
output: `var foo = require('foo-module');\n\nvar a = 123;\n\nrequire('bar-lib');\n\nvar b=456;`,
errors: [
{
line: 1,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
},
{
line: 4,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
}],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `var path = require('path');\nvar foo = require('foo');\nvar bar = 42;`,
output: `var path = require('path');\nvar foo = require('foo');\n\nvar bar = 42;`,
errors: [ {
line: 2,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
} ],
},
{
code: `var assign = Object.assign || require('object-assign');\nvar foo = require('foo');\nvar bar = 42;`,
output: `var assign = Object.assign || require('object-assign');\nvar foo = require('foo');\n\nvar bar = 42;`,
errors: [ {
line: 2,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
} ],
},
{
code: `require('a');\nfoo(require('b'), require('c'), require('d'));\nrequire('d');\nvar foo = 'bar';`,
output: `require('a');\nfoo(require('b'), require('c'), require('d'));\nrequire('d');\n\nvar foo = 'bar';`,
errors: [
{
line: 3,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
},
],
},
{
code: `require('a');\nfoo(\nrequire('b'),\nrequire('c'),\nrequire('d')\n);\nvar foo = 'bar';`,
output: `require('a');\nfoo(\nrequire('b'),\nrequire('c'),\nrequire('d')\n);\n\nvar foo = 'bar';`,
errors: [
{
line: 6,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
},
],
},
{
code: `import path from 'path';\nimport foo from 'foo';\nvar bar = 42;`,
output: `import path from 'path';\nimport foo from 'foo';\n\nvar bar = 42;`,
errors: [ {
line: 2,
column: 1,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import path from 'path';import foo from 'foo';var bar = 42;`,
output: `import path from 'path';import foo from 'foo';\n\nvar bar = 42;`,
errors: [ {
line: 1,
column: 25,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
},
{
code: `import foo from 'foo';\n@SomeDecorator(foo)\nclass Foo {}`,
output: `import foo from 'foo';\n\n@SomeDecorator(foo)\nclass Foo {}`,
errors: [ {
line: 1,
column: 1,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code: `var foo = require('foo');\n@SomeDecorator(foo)\nclass Foo {}`,
output: `var foo = require('foo');\n\n@SomeDecorator(foo)\nclass Foo {}`,
errors: [ {
line: 1,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
} ],
parserOptions: { ecmaVersion: 2015, sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code: `// issue 10042\nimport foo from 'foo';\n@SomeDecorator(foo)\nexport default class Test {}`,
output: `// issue 10042\nimport foo from 'foo';\n\n@SomeDecorator(foo)\nexport default class Test {}`,
errors: [ {
line: 2,
column: 1,
message: IMPORT_ERROR_MESSAGE,
} ],
parserOptions: { sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
{
code: `// issue 1004\nconst foo = require('foo');\n@SomeDecorator(foo)\nexport default class Test {}`,
output: `// issue 1004\nconst foo = require('foo');\n\n@SomeDecorator(foo)\nexport default class Test {}`,
errors: [ {
line: 2,
column: 1,
message: REQUIRE_ERROR_MESSAGE,
} ],
parserOptions: { sourceType: 'module' },
parser: require.resolve('babel-eslint'),
},
],
})