在Angular 6项目中转换为ES5损坏的JS库 [英] Transpile to ES5 corrupt JS library in Angular 6 project
问题描述
我正在尝试在Angular 6项目中使用Dygraph库.它在Chrome/FF中完美运行,但是在IE11中不起作用.我通过npm安装了该库,并从 https://github安装了@types.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/dygraphs
I am trying to use Dygraph library in an Angular 6 project. It works perfectly in Chrome / FF, however it does not work in IE11. I installed the library through npm, and installed the @types from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/dygraphs
我使用以下命令将库导入到模块中:
I imported the library in my module using:
import { default as Dygraph } from 'dygraphs';
当我在IE11上打开页面时,加载停止于:
When I open the page on IE11, loading stops on:
this.xticks.push({pos, label, has_tick});
出现错误 SCRIPT1003:预期为:".
.停止加载的块是:
With error SCRIPT1003: Expected ':'.
. The block where it stops loading is:
DygraphLayout.prototype._evaluateLineTicks = function() {
var i, tick, label, pos, v, has_tick;
this.xticks = [];
for (i = 0; i < this.xTicks_.length; i++) {
tick = this.xTicks_[i];
label = tick.label;
has_tick = !('label_v' in tick);
v = has_tick ? tick.v : tick.label_v;
pos = this.dygraph_.toPercentXCoord(v);
if ((pos >= 0.0) && (pos < 1.0)) {
this.xticks.push({pos, label, has_tick}); <<--- This line stops
}
}
this.yticks = [];
for (i = 0; i < this.yAxes_.length; i++ ) {
var axis = this.yAxes_[i];
for (var j = 0; j < axis.ticks.length; j++) {
tick = axis.ticks[j];
label = tick.label;
has_tick = !('label_v' in tick);
v = has_tick ? tick.v : tick.label_v;
pos = this.dygraph_.toPercentYCoord(v, i);
if ((pos > 0.0) && (pos <= 1.0)) {
this.yticks.push({axis: i, pos, label, has_tick});
}
}
}
};
通过查看原始js文件,我们可以观察到在编译过程中已删除了密钥.原始文件中的功能:
By looking at the original js file, we can observe that the keys have been removed during compilation. Functions in the original file:
DygraphLayout.prototype._evaluateLineTicks = function () {
var i, tick, label, pos, v, has_tick;
this.xticks = [];
for (i = 0; i < this.xTicks_.length; i++) {
tick = this.xTicks_[i];
label = tick.label;
has_tick = !('label_v' in tick);
v = has_tick ? tick.v : tick.label_v;
pos = this.dygraph_.toPercentXCoord(v);
if (pos >= 0.0 && pos < 1.0) {
this.xticks.push({ pos: pos, label: label, has_tick: has_tick });
}
}
this.yticks = [];
for (i = 0; i < this.yAxes_.length; i++) {
var axis = this.yAxes_[i];
for (var j = 0; j < axis.ticks.length; j++) {
tick = axis.ticks[j];
label = tick.label;
has_tick = !('label_v' in tick);
v = has_tick ? tick.v : tick.label_v;
pos = this.dygraph_.toPercentYCoord(v, i);
if (pos > 0.0 && pos <= 1.0) {
this.yticks.push({ axis: i, pos: pos, label: label, has_tick: has_tick });
}
}
}
};
我不明白为什么将工作库转换为非工作文件.我的tsconfig.json文件未更改:
I do not understand why a working library get converted into a non working file. My tsconfig.json file is untouched:
{
"compileOnSave": false,
"compilerOptions": {
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2017",
"dom"
]
}
}
有人有什么线索吗?
推荐答案
结果表明,按照jfriend00的建议,配置必须为:
Turns out that, as recommended by jfriend00, the configuration needed to be:
{
"compileOnSave": false,
"compilerOptions": {
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es5",
"es6",
"dom"
]
}
}
lib的作用在文档中并不清楚,但是似乎应该列出所有要编译的源代码的格式.
What does lib does is not that clear in the documentation, but it seems that it should list the formats from all source codes to be compiled.
由于我拥有DOM,ES5和ES6代码,因此我需要它们全部.我使用的模板仅包含DOM/ES6代码,这可能就是为什么lib仅设置为DOM/ES2017的原因.
As I have DOM, ES5 and ES6 code, I needed all of them. The template I used only contained only DOM/ES6 code, that is probably why the lib was set to DOM/ES2017 only.
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