| 1 | import Scale from './base';
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| 2 | import { ScaleConfig } from './types';
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| 3 | type ScaleConstructor<T extends Scale = Scale> = new (cfg: ScaleConfig) => T;
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| 4 |
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| 5 | interface ScaleMap {
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| 6 | [key: string]: ScaleConstructor;
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| 7 | }
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| 8 |
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| 9 | const map: ScaleMap = {};
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| 10 |
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| 11 | function getClass(key: string): ScaleConstructor {
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| 12 | return map[key];
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| 13 | }
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| 14 |
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| 15 | function registerClass(key: string, cls: ScaleConstructor) {
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| 16 | if (getClass(key)) {
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| 17 | throw new Error(`type '${key}' existed.`);
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| 18 | }
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| 19 | map[key] = cls;
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| 20 | }
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| 21 |
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| 22 | export { Scale, getClass as getScale, registerClass as registerScale };
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