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| 1 | +import * as glimmerValidator from '@glimmer/validator'; |
| 2 | + |
| 3 | +// Ember apps can provide @glimmer/validator through different module shapes |
| 4 | +// depending on ember-source version and bundling mode. We centralize the |
| 5 | +// resolution logic here so modifiers can always call a single untrack API. |
| 6 | + |
| 7 | +type UntrackCallback = () => void; |
| 8 | +type Untrack = (callback: UntrackCallback) => void; |
| 9 | +type ValidatorRequire = (moduleName: string) => ValidatorModule; |
| 10 | + |
| 11 | +interface ValidatorModule { |
| 12 | + untrack?: unknown; |
| 13 | + beginUntrackFrame?: unknown; |
| 14 | + endUntrackFrame?: unknown; |
| 15 | +} |
| 16 | + |
| 17 | +function getCallable<T extends (...args: never[]) => unknown>( |
| 18 | + target: unknown, |
| 19 | + property: string, |
| 20 | +): T | undefined { |
| 21 | + const value = (target as Record<string, unknown>)[property]; |
| 22 | + |
| 23 | + return typeof value === 'function' ? (value as T) : undefined; |
| 24 | +} |
| 25 | + |
| 26 | +function tryRequire(maybeRequire: ValidatorRequire | undefined) { |
| 27 | + if (typeof maybeRequire !== 'function') { |
| 28 | + return undefined; |
| 29 | + } |
| 30 | + |
| 31 | + try { |
| 32 | + return maybeRequire('@glimmer/validator'); |
| 33 | + } catch { |
| 34 | + return undefined; |
| 35 | + } |
| 36 | +} |
| 37 | + |
| 38 | +function resolveValidatorModule(): ValidatorModule { |
| 39 | + const importedModule = glimmerValidator as ValidatorModule; |
| 40 | + const importedUntrack = getCallable<Untrack>(importedModule, 'untrack'); |
| 41 | + const importedBeginUntrackFrame = getCallable<() => void>( |
| 42 | + importedModule, |
| 43 | + 'beginUntrackFrame', |
| 44 | + ); |
| 45 | + |
| 46 | + if (importedUntrack || importedBeginUntrackFrame) { |
| 47 | + // Modern ESM shape: use the imported namespace directly. |
| 48 | + return importedModule; |
| 49 | + } |
| 50 | + |
| 51 | + const globalWithEmber = globalThis as { |
| 52 | + Ember?: { |
| 53 | + __loader?: { |
| 54 | + require?: (moduleName: string) => ValidatorModule; |
| 55 | + }; |
| 56 | + }; |
| 57 | + require?: ValidatorRequire; |
| 58 | + requirejs?: ValidatorRequire; |
| 59 | + }; |
| 60 | + |
| 61 | + const requireCandidates: Array<ValidatorRequire | undefined> = [ |
| 62 | + globalWithEmber.Ember?.__loader?.require, |
| 63 | + globalWithEmber.require, |
| 64 | + globalWithEmber.requirejs, |
| 65 | + ]; |
| 66 | + |
| 67 | + for (const maybeRequire of requireCandidates) { |
| 68 | + const module = tryRequire(maybeRequire); |
| 69 | + |
| 70 | + if (module) { |
| 71 | + // Older or compat builds: resolve from runtime module loader. |
| 72 | + return module; |
| 73 | + } |
| 74 | + } |
| 75 | + |
| 76 | + return {}; |
| 77 | +} |
| 78 | + |
| 79 | +export const untrack: Untrack = (() => { |
| 80 | + const validator = resolveValidatorModule(); |
| 81 | + const moduleUntrack = getCallable<Untrack>(validator, 'untrack'); |
| 82 | + |
| 83 | + if (moduleUntrack) { |
| 84 | + return moduleUntrack; |
| 85 | + } |
| 86 | + |
| 87 | + const beginUntrackFrame = getCallable<() => void>( |
| 88 | + validator, |
| 89 | + 'beginUntrackFrame', |
| 90 | + ); |
| 91 | + const endUntrackFrame = getCallable<() => void>(validator, 'endUntrackFrame'); |
| 92 | + |
| 93 | + if (beginUntrackFrame && endUntrackFrame) { |
| 94 | + // Some validator versions expose frame primitives instead of untrack. |
| 95 | + return (callback: UntrackCallback) => { |
| 96 | + beginUntrackFrame(); |
| 97 | + |
| 98 | + try { |
| 99 | + callback(); |
| 100 | + } finally { |
| 101 | + endUntrackFrame(); |
| 102 | + } |
| 103 | + }; |
| 104 | + } |
| 105 | + |
| 106 | + // Last resort for very old or unexpected runtime shapes. |
| 107 | + return (callback: UntrackCallback) => callback(); |
| 108 | +})(); |
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