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no-new-buffer.js
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no-new-buffer.js
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import {outdent} from 'outdent';
import {test} from './utils/test.js';
test.snapshot({
valid: [
'const buffer = Buffer',
'const buffer = new NotBuffer(1)',
'const buffer = Buffer.from(\'buf\')',
'const buffer = Buffer.from(\'7468697320697320612074c3a97374\', \'hex\')',
'const buffer = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72])',
'const buffer = Buffer.alloc(10)'
],
invalid: [
// `new Buffer(array)`
// https://nodejs.org/api/buffer.html#buffer_new_buffer_array
'const buffer = new Buffer([0x62, 0x75, 0x66, 0x66, 0x65, 0x72])',
'const buffer = new Buffer([0x62, bar])',
outdent`
const array = [0x62];
const buffer = new Buffer(array);
`,
// `new Buffer(arrayBuffer[, byteOffset[, length]])`
// https://nodejs.org/api/buffer.html#buffer_new_buffer_arraybuffer_byteoffset_length
outdent`
const arrayBuffer = new ArrayBuffer(10);
const buffer = new Buffer(arrayBuffer);
`,
outdent`
const arrayBuffer = new ArrayBuffer(10);
const buffer = new Buffer(arrayBuffer, 0, );
`,
outdent`
const arrayBuffer = new ArrayBuffer(10);
const buffer = new Buffer(arrayBuffer, 0, 2);
`,
// `new Buffer(size)`
// https://nodejs.org/api/buffer.html#buffer_new_buffer_size
'const buffer = new Buffer(10);',
outdent`
const size = 10;
const buffer = new Buffer(size);
`,
// `new Buffer(string[, encoding])`
// https://nodejs.org/api/buffer.html#buffer_new_buffer_string_encoding
'const buffer = new Buffer("string");',
'const buffer = new Buffer("7468697320697320612074c3a97374", "hex")',
outdent`
const string = "string";
const buffer = new Buffer(string);
`,
// eslint-disable-next-line no-template-curly-in-string
'const buffer = new Buffer(`${unknown}`)',
// Unknown
'const buffer = new (Buffer)(unknown)',
'const buffer = new Buffer(unknown, 2)',
'const buffer = new Buffer(...unknown)',
// Misc
'const buffer = new /* comment */ Buffer()',
'const buffer = new /* comment */ Buffer'
]
});
test.typescript({
valid: [],
invalid: [
{
code: 'new Buffer(input, encoding);',
output: 'Buffer.from(input, encoding);',
errors: 1
}
]
});