1 | const browserify = require('browserify')
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2 | const watchify = require('watchify')
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3 | const { createWriteStream } = require('fs')
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4 | const { readFile } = require('fs').promises
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5 |
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6 | const bundleResourceToFile = (inPath, outPath) => {
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7 | return new Promise((resolve, reject) => {
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8 | browserify(inPath).bundle()
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9 | .once('error', (e) => reject(e))
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10 | .pipe(createWriteStream(outPath))
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11 | .once('finish', () => resolve())
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12 | })
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13 | }
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14 |
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15 | const bundleResource = (inPath) => {
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16 | return new Promise((resolve, reject) => {
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17 | browserify(inPath).bundle((err, buffer) => {
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18 | if (err != null) {
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19 | reject(err)
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20 | return
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21 | }
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22 |
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23 | resolve(buffer)
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24 | })
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25 | })
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26 | }
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27 |
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28 | const watchResourceToFile = (inPath, outPath) => {
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29 | const b = browserify({
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30 | entries: [inPath],
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31 | cache: {},
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32 | packageCache: {},
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33 | plugin: [watchify]
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34 | })
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35 |
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36 | const bundle = () => {
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37 | b.bundle()
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38 | .once('error', (e) => {
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39 | console.error(`Failed to bundle ${inPath} into ${outPath}.`)
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40 | console.error(e)
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41 | })
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42 | .pipe(createWriteStream(outPath))
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43 | .once('finish', () => console.log(`Bundled ${inPath} into ${outPath}.`))
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44 | }
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45 |
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46 | b.on('update', bundle)
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47 | bundle()
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48 | }
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49 |
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50 | const main = async () => {
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51 | if (process.argv[2] === 'build') {
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52 | await bundleResourceToFile('client/main.js', 'static/karma.js')
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53 | await bundleResourceToFile('context/main.js', 'static/context.js')
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54 | } else if (process.argv[2] === 'check') {
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55 | const expectedClient = await bundleResource('client/main.js')
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56 | const expectedContext = await bundleResource('context/main.js')
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57 |
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58 | const actualClient = await readFile('static/karma.js')
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59 | const actualContext = await readFile('static/context.js')
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60 |
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61 | if (Buffer.compare(expectedClient, actualClient) !== 0 || Buffer.compare(expectedContext, actualContext) !== 0) {
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62 |
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63 | throw 'Bundled client assets are outdated. Forgot to run "npm run build"?'
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64 | }
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65 | } else if (process.argv[2] === 'watch') {
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66 | watchResourceToFile('client/main.js', 'static/karma.js')
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67 | watchResourceToFile('context/main.js', 'static/context.js')
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68 | } else {
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69 |
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70 | throw `Unknown command: ${process.argv[2]}`
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71 | }
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72 | }
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73 |
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74 | main().catch((err) => {
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75 | console.error(err)
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76 | process.exit(1)
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77 | })
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