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dist/index.js

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"use strict";
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/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2016-2019 Mickael Jeanroy
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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var path = require('path');
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var rollupPluginUtils = require('rollup-pluginutils');
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var extractBanner = require('extract-banner');
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var MagicString = require('magic-string');
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module.exports = function () {
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var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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var filter = rollupPluginUtils.createFilter(options.include, options.exclude);
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return {
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transform: function transform(code, id) {
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if (!filter(id)) {
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return;
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} // Remove banner for JS files only
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var ext = path.extname(id).toLowerCase();
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if (ext !== '.js' && ext !== '.jsx' && ext !== '.ts' && ext !== '.tsx') {
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return;
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}
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var banner = extractBanner(code);
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if (!banner) {
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return;
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} // Use a magicString: it will generate the sourceMap at the end.
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var magicString = new MagicString(code);
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var pos = code.indexOf(banner); // Remove the banner with the magicString instance.
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magicString.remove(pos, pos + banner.length); // Trim left to remove blank spaces.
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magicString.trimStart();
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return {
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code: magicString.toString(),
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map: magicString.generateMap({
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hires: true
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})
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};
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}
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};
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};

package.json

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{
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"name": "rollup-plugin-strip-banner",
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"version": "0.3.0",
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"version": "1.0.0",
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"description": "Rollup plugin that can be used to remove banner on modules",
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"main": "dist/index.js",
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"scripts": {

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