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Diffstat (limited to 'src/data/composite/control-flow/exposeWhetherDependencyAvailable.js')
-rw-r--r-- | src/data/composite/control-flow/exposeWhetherDependencyAvailable.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/data/composite/control-flow/exposeWhetherDependencyAvailable.js b/src/data/composite/control-flow/exposeWhetherDependencyAvailable.js new file mode 100644 index 00000000..a2fdd6b0 --- /dev/null +++ b/src/data/composite/control-flow/exposeWhetherDependencyAvailable.js @@ -0,0 +1,42 @@ +// Exposes true if a dependency is available, and false otherwise, +// or the reverse if the `negate` input is set true. +// +// See withResultOfAvailabilityCheck for {mode} options. + +import {input, templateCompositeFrom} from '#composite'; + +import inputAvailabilityCheckMode from './inputAvailabilityCheckMode.js'; +import withResultOfAvailabilityCheck from './withResultOfAvailabilityCheck.js'; + +export default templateCompositeFrom({ + annotation: `exposeWhetherDependencyAvailable`, + + compose: false, + + inputs: { + dependency: input({acceptsNull: true}), + + mode: inputAvailabilityCheckMode(), + + negate: input({type: 'boolean', defaultValue: false}), + }, + + steps: () => [ + withResultOfAvailabilityCheck({ + from: input('dependency'), + mode: input('mode'), + }), + + { + dependencies: ['#availability', input('negate')], + + compute: ({ + ['#availability']: availability, + [input('negate')]: negate, + }) => + (negate + ? !availability + : availability), + }, + ], +}); |