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Channel.isChannel: Work with 'undefined' and 'null'.

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This commit is contained in:
David Braun 2018-04-26 13:09:28 -04:00
parent fda1c036b4
commit 237f5c302b
2 changed files with 5 additions and 1 deletions
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4
lib/index.js
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@ -408,7 +408,9 @@ Channel.from = (values, mapfn, thisArg) => {
}; };
Channel.of = (...values) => Channel.from(values); Channel.of = (...values) => Channel.from(values);
Channel.isChannel = arg => Object.getPrototypeOf(arg) === prototype;
Channel.isChannel = arg =>
arg !== undefined && arg !== null && Object.getPrototypeOf(arg) === prototype;
Channel.select = methodPromises => Channel.select = methodPromises =>
Object.assign( Object.assign(

2
test/index.js
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@ -82,6 +82,8 @@ describe(`Channel function`, function() {
it(`isChannel`, function() { it(`isChannel`, function() {
assert(Channel.isChannel(Channel.of(0, 1, 2))); assert(Channel.isChannel(Channel.of(0, 1, 2)));
assert(!Channel.isChannel(Array.of(0, 1, 2))); assert(!Channel.isChannel(Array.of(0, 1, 2)));
assert(!Channel.isChannel(undefined));
assert(!Channel.isChannel(null));
assert(Channel.isChannel(Channel().readOnly())); assert(Channel.isChannel(Channel().readOnly()));
assert(Channel.isChannel(Channel().writeOnly())); assert(Channel.isChannel(Channel().writeOnly()));
}); });