我收到以下 Typescript 警告:
let d: { [key: string]: { [k: string]: boolean } | number[] } = {
blah: [],
};
d["blah"].push(2);
警告:
This expression is not callable.
Not all constituents of type 'boolean | ((...items: number[]) => number)'
are callable.
Type 'false' has no call signatures. (tsserver 2349)
代码有效,如果我 console.log(d['blah']) 我得到
[2]
。为什么我会收到警告?我该如何纠正它(或忽略它)?
我的 tsconfig:
{
"compilerOptions": {
"target": "es2015",
"lib": ["dom", "dom.iterable", "esnext"],
"allowJs": true,
"skipLibCheck": true,
"strict": true,
"noEmit": true,
"esModuleInterop": true,
"module": "esnext",
"moduleResolution": "bundler",
"resolveJsonModule": true,
"isolatedModules": true,
"jsx": "preserve",
"incremental": true,
"plugins": [
{
"name": "next"
}
],
"paths": {
"@/*": ["./*"]
}
},
"include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
"exclude": ["node_modules"]
}
我尝试打印到控制台并且代码可以工作,所以我很困惑为什么会出现警告(如果它有效的话)
根据您定义的打字稿接口
key
可以是数字数组或对象。
所以你应该首先检查
d['blah']
是否是一个数组,然后推送值
interface IObjectType {
[key: string]: {
[k: string]: boolean
} | number[]
}
let d: IObjectType = {
blah: [],
};
if (Array.isArray(d['blah'])) {
d["blah"].push(2);
}