1 | /*
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2 | MIT License http://www.opensource.org/licenses/mit-license.php
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3 | Author Tobias Koppers @sokra
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4 | */
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5 | "use strict";
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6 |
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7 | const Source = require("./Source");
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8 |
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9 | class CompatSource extends Source {
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10 | static from(sourceLike) {
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11 | return sourceLike instanceof Source
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12 | ? sourceLike
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13 | : new CompatSource(sourceLike);
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14 | }
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15 |
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16 | constructor(sourceLike) {
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17 | super();
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18 | this._sourceLike = sourceLike;
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19 | }
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20 |
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21 | source() {
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22 | return this._sourceLike.source();
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23 | }
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24 |
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25 | buffer() {
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26 | if (typeof this._sourceLike.buffer === "function") {
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27 | return this._sourceLike.buffer();
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28 | }
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29 | return super.buffer();
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30 | }
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31 |
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32 | size() {
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33 | if (typeof this._sourceLike.size === "function") {
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34 | return this._sourceLike.size();
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35 | }
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36 | return super.size();
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37 | }
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38 |
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39 | map(options) {
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40 | if (typeof this._sourceLike.map === "function") {
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41 | return this._sourceLike.map(options);
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42 | }
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43 | return super.map(options);
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44 | }
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45 |
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46 | sourceAndMap(options) {
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47 | if (typeof this._sourceLike.sourceAndMap === "function") {
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48 | return this._sourceLike.sourceAndMap(options);
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49 | }
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50 | return super.sourceAndMap(options);
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51 | }
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52 |
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53 | updateHash(hash) {
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54 | if (typeof this._sourceLike.updateHash === "function") {
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55 | return this._sourceLike.updateHash(hash);
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56 | }
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57 | if (typeof this._sourceLike.map === "function") {
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58 | throw new Error(
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59 | "A Source-like object with a 'map' method must also provide an 'updateHash' method"
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60 | );
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61 | }
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62 | hash.update(this.buffer());
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63 | }
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64 | }
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65 |
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66 | module.exports = CompatSource;
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