| 1 | var N = require('libnested')
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| 2 |
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| 3 | function isFunction (f) {
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| 4 | return typeof f === 'function'
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| 5 | }
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| 6 |
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| 7 | function isTrue (b) {
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| 8 | return b === true
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| 9 | }
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| 10 |
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| 11 | function isGives (o) {
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| 12 | return isString(o) || N.each(o, isTrue)
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| 13 | }
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| 14 |
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| 15 | function isType (t) {
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| 16 | return ({map: true, first: true, reduce: true})[t]
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| 17 | }
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| 18 |
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| 19 | function isNeeds (n) {
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| 20 | return N.each(n, isType)
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| 21 | }
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| 22 |
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| 23 | function isModule (m) {
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| 24 | return isFunction(m.create) && isGives(m.gives) && (!m.needs || isNeeds(m.needs))
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| 25 | }
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| 26 |
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| 27 | function isString (s) {
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| 28 | return typeof s === 'string'
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| 29 | }
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| 30 |
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| 31 | module.exports = isModule
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