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Add declaration for node.js’ process.emitWarning #3248

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Add declaration for node.js’ process.emitWarning #3248

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1 change: 1 addition & 0 deletions lib/node.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1621,6 +1621,7 @@ declare class Process extends events$EventEmitter {
cwd() : string;
disconnect? : () => void;
env : { [key: string] : ?string };
emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
execArgv : Array<string>;
execPath : string;
exit(code? : number) : void;
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70 changes: 68 additions & 2 deletions tests/node_tests/node_tests.exp
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Expand Up @@ -274,5 +274,71 @@ os/userInfo.js:14
14: (u3.username: string); // error
^^^^^^ string


Found 33 errors
process/process.js:10
10: process.emitWarning(); // error
^^^^^^^^^^^^^^^^^^^^^ call of method `emitWarning`
10: process.emitWarning(); // error
^^^^^^^^^^^^^^^^^^^^^ undefined (too few arguments, expected default/rest parameters). This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^^^^^^^^^ union: string | Error. See lib: <BUILTINS>/node.js:1624
Member 1:
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^ string. See lib: <BUILTINS>/node.js:1624
Error:
10: process.emitWarning(); // error
^^^^^^^^^^^^^^^^^^^^^ undefined (too few arguments, expected default/rest parameters). This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^ string. See lib: <BUILTINS>/node.js:1624
Member 2:
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^ Error. See lib: <BUILTINS>/node.js:1624
Error:
10: process.emitWarning(); // error
^^^^^^^^^^^^^^^^^^^^^ undefined (too few arguments, expected default/rest parameters). This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^ Error. See lib: <BUILTINS>/node.js:1624

process/process.js:11
11: process.emitWarning(42); // error
^^^^^^^^^^^^^^^^^^^^^^^ call of method `emitWarning`
11: process.emitWarning(42); // error
^^ number. This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^^^^^^^^^ union: string | Error. See lib: <BUILTINS>/node.js:1624
Member 1:
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^ string. See lib: <BUILTINS>/node.js:1624
Error:
11: process.emitWarning(42); // error
^^ number. This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^ string. See lib: <BUILTINS>/node.js:1624
Member 2:
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^ Error. See lib: <BUILTINS>/node.js:1624
Error:
11: process.emitWarning(42); // error
^^ number. This type is incompatible with
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^ Error. See lib: <BUILTINS>/node.js:1624

process/process.js:12
12: process.emitWarning("blah", 42); // error
^^ number. This type is incompatible with the expected param type of
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^ string. See lib: <BUILTINS>/node.js:1624

process/process.js:13
13: process.emitWarning("blah", "blah", 42); // error
^^ number. This type is incompatible with the expected param type of
1624: emitWarning(warning : string | Error, name? : string, ctor? : Function) : void;
^^^^^^^^ function type. See lib: <BUILTINS>/node.js:1624

process/process.js:14
14: (process.emitWarning("blah"): string); // error
^^^^^^^^^^^^^^^^^^^^^^^^^^^ undefined. This type is incompatible with
14: (process.emitWarning("blah"): string); // error
^^^^^^ string


Found 38 errors
14 changes: 14 additions & 0 deletions tests/node_tests/process/process.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
/* @flow */

/* emitWarning */

process.emitWarning("blah");
process.emitWarning(new Error("blah"));
process.emitWarning("blah", "blah");
process.emitWarning("blah", "blah", () => {});

process.emitWarning(); // error
process.emitWarning(42); // error
process.emitWarning("blah", 42); // error
process.emitWarning("blah", "blah", 42); // error
(process.emitWarning("blah"): string); // error