| 1 | import { Identity as IdentityScale, ScaleConfig } from '@antv/scale';
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| 2 | import Base from './base';
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| 3 |
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| 4 | class Identity extends Base {
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| 5 | createScale(scaleConfig: ScaleConfig) {
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| 6 | return new IdentityScale(scaleConfig);
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| 7 | }
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| 8 |
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| 9 | _mapping() {
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| 10 | const { field, range } = this;
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| 11 | return field || (range && range[0]);
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| 12 | }
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| 13 | }
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| 14 |
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| 15 | export default Identity;
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