1 | import virtual from '@rollup/plugin-virtual';
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2 | import { promise } from 'matched';
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3 |
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4 |
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5 |
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6 | const DEFAULT_OUTPUT = 'multi-entry.js';
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7 | const AS_IMPORT = 'import';
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8 | const AS_EXPORT = 'export * from';
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9 |
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10 | function multiEntry(conf = {}) {
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11 | const config = {
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12 | include: [],
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13 | exclude: [],
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14 | entryFileName: DEFAULT_OUTPUT,
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15 | exports: true,
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16 | ...conf
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17 | };
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18 |
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19 | let prefix = config.exports === false ? AS_IMPORT : AS_EXPORT;
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20 | const exporter = (path) => `${prefix} ${JSON.stringify(path)}`;
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21 |
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22 | const configure = (input) => {
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23 | if (typeof input === 'string') {
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24 | config.include = [input];
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25 | } else if (Array.isArray(input)) {
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26 | config.include = input;
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27 | } else {
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28 | const { include = [], exclude = [], entryFileName = DEFAULT_OUTPUT, exports } = input;
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29 | config.include = include;
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30 | config.exclude = exclude;
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31 | config.entryFileName = entryFileName;
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32 | if (exports === false) {
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33 | prefix = AS_IMPORT;
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34 | }
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35 | }
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36 | };
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37 |
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38 | let virtualisedEntry;
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39 |
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40 | return {
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41 | name: 'multi-entry',
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42 |
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43 | options(options) {
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44 | if (options.input !== config.entryFileName) {
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45 | configure(options.input);
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46 | }
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47 | return {
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48 | ...options,
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49 | input: config.entryFileName
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50 | };
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51 | },
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52 |
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53 | outputOptions(options) {
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54 | return {
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55 | ...options,
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56 | entryFileNames: config.entryFileName
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57 | };
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58 | },
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59 |
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60 | buildStart(options) {
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61 | const patterns = config.include.concat(config.exclude.map((pattern) => `!${pattern}`));
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62 | const entries = patterns.length
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63 | ? promise(patterns, { realpath: true }).then((paths) => paths.map(exporter).join('\n'))
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64 | : Promise.resolve('');
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65 |
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66 | virtualisedEntry = virtual({ [options.input]: entries });
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67 | },
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68 |
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69 | resolveId(id, importer) {
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70 | return virtualisedEntry && virtualisedEntry.resolveId(id, importer);
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71 | },
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72 |
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73 | load(id) {
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74 | return virtualisedEntry && virtualisedEntry.load(id);
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75 | }
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76 | };
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77 | }
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78 |
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79 | export default multiEntry;
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