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The "fs" module has two functions called `maybeCallback` and `makeCallback`, as of now. The `maybeCallback` creates a default function to report errors, if the parameter passed is not a function object. Basically, if the callback is omitted in some cases, this function is used to create a default callback function. The `makeCallback`, OTOH, creates a default function only if the parameter passed is `undefined`, and if it is not a function object it will throw an `Error`. This patch removes the `maybeCallback` function and makes the callback function argument mandatory for all the async functions. PR-URL: https://github.com/nodejs/node/pull/7168 Reviewed-By: Trevor Norris <trev.norris@gmail.com>
26 lines
599 B
JavaScript
26 lines
599 B
JavaScript
'use strict';
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require('../common');
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var assert = require('assert');
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var fs = require('fs');
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function test(cb) {
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return function() {
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// fs.stat() calls makeCallback() on its second argument
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fs.stat(__filename, cb);
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};
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}
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// Verify the case where a callback function is provided
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assert.doesNotThrow(test(function() {}));
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// Anything else should throw
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assert.throws(test(null));
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assert.throws(test(true));
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assert.throws(test(false));
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assert.throws(test(1));
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assert.throws(test(0));
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assert.throws(test('foo'));
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assert.throws(test(/foo/));
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assert.throws(test([]));
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assert.throws(test({}));
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