| 1 | import { TraceMode, die, getAtom, globalState } from "../internal"
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| 2 |
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| 3 | export function trace(thing?: any, prop?: string, enterBreakPoint?: boolean): void
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| 4 | export function trace(thing?: any, enterBreakPoint?: boolean): void
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| 5 | export function trace(enterBreakPoint?: boolean): void
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| 6 | export function trace(...args: any[]): void {
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| 7 | if (!__DEV__) die(`trace() is not available in production builds`)
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| 8 | let enterBreakPoint = false
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| 9 | if (typeof args[args.length - 1] === "boolean") enterBreakPoint = args.pop()
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| 10 | const derivation = getAtomFromArgs(args)
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| 11 | if (!derivation) {
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| 12 | return die(
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| 13 | `'trace(break?)' can only be used inside a tracked computed value or a Reaction. Consider passing in the computed value or reaction explicitly`
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| 14 | )
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| 15 | }
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| 16 | if (derivation.isTracing_ === TraceMode.NONE) {
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| 17 | console.log(`[mobx.trace] '${derivation.name_}' tracing enabled`)
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| 18 | }
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| 19 | derivation.isTracing_ = enterBreakPoint ? TraceMode.BREAK : TraceMode.LOG
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| 20 | }
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| 21 |
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| 22 | function getAtomFromArgs(args): any {
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| 23 | switch (args.length) {
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| 24 | case 0:
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| 25 | return globalState.trackingDerivation
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| 26 | case 1:
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| 27 | return getAtom(args[0])
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| 28 | case 2:
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| 29 | return getAtom(args[0], args[1])
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| 30 | }
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| 31 | }
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