1 | export interface RunScriptOptions {
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2 | /**
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3 | * @default false
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4 | * Set to true to NOT call process.exit(0) after function is completed.
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5 | * Currently it exists because of `jest --maxWorkers=1` behavior. To be investigated more..
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6 | */
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7 | noExit?: boolean
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8 | }
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9 |
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10 | /**
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11 | * Use it in your top-level scripts like this:
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12 | *
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13 | * runScript(async () => {
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14 | * await lalala()
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15 | * // my script goes on....
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16 | * })
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17 | *
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18 | * Advantages:
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19 | * - Works kind of like top-level await
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20 | * - No need to add `void`
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21 | * - No need to add `.then(() => process.exit()` (e.g to close DB connections)
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22 | * - No need to add `.catch(err => { console.error(err); process.exit(1) })`
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23 | *
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24 | * This function is kept light, dependency-free, exported separately.
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25 | */
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26 | export function runScript(fn: (...args: any[]) => any, opt: RunScriptOptions = {}): void {
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27 | process.on('uncaughtException', err => {
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28 | console.error('uncaughtException', err)
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29 | })
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30 | process.on('unhandledRejection', err => {
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31 | console.error('unhandledRejection', err)
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32 | })
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33 |
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34 | void (async () => {
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35 | try {
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36 | await fn()
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37 |
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38 | if (!opt.noExit) {
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39 | setImmediate(() => process.exit(0))
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40 | }
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41 | } catch (err) {
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42 | console.error('runScript failed:', err)
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43 | process.exitCode = 1
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44 | if (!opt.noExit) {
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45 | setImmediate(() => process.exit(1))
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46 | }
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47 | }
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48 | })()
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49 | }
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