130 lines
1.9 KiB
Plaintext
130 lines
1.9 KiB
Plaintext
=== tests/cases/conformance/expressions/binaryOperators/additionOperator/additionOperatorWithNullValueAndValidOperator.ts ===
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// If one operand is the null or undefined value, it is treated as having the type of the other operand.
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enum E { a, b, c }
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>E : E
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>a : E
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>b : E
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>c : E
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var a: any;
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>a : any
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var b: number;
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>b : number
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var c: E;
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>c : E
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>E : E
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var d: string;
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>d : string
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// null + any
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var r1: any = null + a;
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>r1 : any
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>null + a : any
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>null : null
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>a : any
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var r2: any = a + null;
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>r2 : any
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>a + null : any
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>a : any
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>null : null
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// null + number/enum
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var r3 = null + b;
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>r3 : number
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>null + b : number
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>null : null
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>b : number
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var r4 = null + 1;
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>r4 : number
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>null + 1 : number
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>null : null
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>1 : number
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var r5 = null + c;
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>r5 : number
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>null + c : number
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>null : null
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>c : E
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var r6 = null + E.a;
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>r6 : number
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>null + E.a : number
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>null : null
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>E.a : E
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>E : typeof E
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>a : E
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var r7 = null + E['a'];
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>r7 : number
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>null + E['a'] : number
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>null : null
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>E['a'] : E
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>E : typeof E
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>'a' : string
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var r8 = b + null;
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>r8 : number
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>b + null : number
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>b : number
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>null : null
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var r9 = 1 + null;
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>r9 : number
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>1 + null : number
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>1 : number
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>null : null
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var r10 = c + null
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>r10 : number
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>c + null : number
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>c : E
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>null : null
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var r11 = E.a + null;
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>r11 : number
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>E.a + null : number
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>E.a : E
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>E : typeof E
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>a : E
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>null : null
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var r12 = E['a'] + null;
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>r12 : number
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>E['a'] + null : number
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>E['a'] : E
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>E : typeof E
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>'a' : string
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>null : null
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// null + string
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var r13 = null + d;
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>r13 : string
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>null + d : string
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>null : null
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>d : string
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var r14 = null + '';
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>r14 : string
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>null + '' : string
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>null : null
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>'' : string
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var r15 = d + null;
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>r15 : string
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>d + null : string
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>d : string
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>null : null
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var r16 = '' + null;
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>r16 : string
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>'' + null : string
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>'' : string
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>null : null
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