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34 lines
1.1 KiB
34 lines
1.1 KiB
'use strict';
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const path = require('path');
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const resolveFrom = require('resolve-from');
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const parentModule = require('parent-module');
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module.exports = moduleId => {
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if (typeof moduleId !== 'string') {
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throw new TypeError('Expected a string');
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}
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const parentPath = parentModule(__filename);
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const cwd = parentPath ? path.dirname(parentPath) : __dirname;
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const filePath = resolveFrom(cwd, moduleId);
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const oldModule = require.cache[filePath];
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// Delete itself from module parent
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if (oldModule && oldModule.parent) {
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let i = oldModule.parent.children.length;
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while (i--) {
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if (oldModule.parent.children[i].id === filePath) {
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oldModule.parent.children.splice(i, 1);
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}
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}
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}
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delete require.cache[filePath]; // Delete module from cache
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const parent = require.cache[parentPath]; // If `filePath` and `parentPath` are the same, cache will already be deleted so we won't get a memory leak in next step
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return parent === undefined ? require(filePath) : parent.require(filePath); // In case cache doesn't have parent, fall back to normal require
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};
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