2fecc132ab
From spec: Note that type guards affect types of variables and parameters only and have no effect on members of objects such as properties
94 lines
3.2 KiB
TypeScript
94 lines
3.2 KiB
TypeScript
//// [typeGuardsObjectMethods.ts]
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// Note that type guards affect types of variables and parameters only and
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// have no effect on members of objects such as properties.
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// variables in global
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var num: number;
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var strOrNum: string | number;
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var var1: string | number;
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var obj1 = {
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// Inside method
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method(param: string | number) {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2: string | number;
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num = typeof var2 === "string" && var2.length; // string
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// parameters in function declaration
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num = typeof param === "string" && param.length; // string
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return strOrNum;
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},
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get prop() {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2: string | number;
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num = typeof var2 === "string" && var2.length; // string
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return strOrNum;
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},
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set prop(param: string | number) {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2: string | number;
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num = typeof var2 === "string" && var2.length; // string
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// parameters in function declaration
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num = typeof param === "string" && param.length; // string
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}
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};
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// return expression of the method
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strOrNum = typeof obj1.method(strOrNum) === "string" && obj1.method(strOrNum);
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// accessing getter property
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strOrNum = typeof obj1.prop === "string" && obj1.prop;
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//// [typeGuardsObjectMethods.js]
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// Note that type guards affect types of variables and parameters only and
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// have no effect on members of objects such as properties.
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// variables in global
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var num;
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var strOrNum;
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var var1;
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var obj1 = {
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// Inside method
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method: function (param) {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2;
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num = typeof var2 === "string" && var2.length; // string
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// parameters in function declaration
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num = typeof param === "string" && param.length; // string
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return strOrNum;
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},
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get prop() {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2;
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num = typeof var2 === "string" && var2.length; // string
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return strOrNum;
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},
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set prop(param) {
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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// variables in function declaration
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var var2;
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num = typeof var2 === "string" && var2.length; // string
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// parameters in function declaration
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num = typeof param === "string" && param.length; // string
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}
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};
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// return expression of the method
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strOrNum = typeof obj1.method(strOrNum) === "string" && obj1.method(strOrNum);
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// accessing getter property
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strOrNum = typeof obj1.prop === "string" && obj1.prop;
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